Updates available but manual intervention required

Try `lake update` and then investigate why this update causes the lean build to fail.

Files changed in update:
- lake-manifest.json

## Build Output

```
warning: manifest out of date: git revision of dependency 'mathlib' changed; use `lake update mathlib` to update it
⚠ [753/989] Replayed ABCExceptions.ForMathlib.Misc
warning: ABCExceptions/ForMathlib/Misc.lean:35:22: `lt_or_le` has been deprecated: use `lt_or_ge` instead
⚠ [1849/1852] Replayed ABCExceptions.Section4
warning: ABCExceptions/Section4.lean:189:77: `le_of_not_le` has been deprecated: use `le_of_not_ge` instead
warning: ABCExceptions/Section4.lean:519:8: `LT.lt.not_lt` has been deprecated: use `LT.lt.not_gt` instead
warning: ABCExceptions/Section4.lean:712:11: `LE.le.not_lt` has been deprecated: use `LE.le.not_gt` instead
warning: ABCExceptions/Section4.lean:746:8: `LE.le.not_lt` has been deprecated: use `LE.le.not_gt` instead
warning: ABCExceptions/Section4.lean:1071:8: `LT.lt.not_le` has been deprecated: use `LT.lt.not_ge` instead
warning: ABCExceptions/Section4.lean:1079:22: `le_or_lt` has been deprecated: use `le_or_gt` instead
warning: ABCExceptions/Section4.lean:1103:11: `LT.lt.not_lt` has been deprecated: use `LT.lt.not_gt` instead
warning: ABCExceptions/Section4.lean:1131:8: `LT.lt.not_le` has been deprecated: use `LT.lt.not_ge` instead
warning: ABCExceptions/Section4.lean:1530:10: `LE.le.not_lt` has been deprecated: use `LE.le.not_gt` instead
warning: ABCExceptions/Section4.lean:1573:8: `le_or_lt` has been deprecated: use `le_or_gt` instead
warning: ABCExceptions/Section4.lean:1596:50: `le_of_not_le` has been deprecated: use `le_of_not_ge` instead
warning: ABCExceptions/Section4.lean:1600:67: `le_of_not_le` has been deprecated: use `le_of_not_ge` instead
✖ [1850/1852] Building ABCExceptions.Section2
trace: .> LEAN_PATH=/home/runner/work/ABC-Exceptions/ABC-Exceptions/.lake/packages/Cli/.lake/build/lib/lean:/home/runner/work/ABC-Exceptions/ABC-Exceptions/.lake/packages/batteries/.lake/build/lib/lean:/home/runner/work/ABC-Exceptions/ABC-Exceptions/.lake/packages/Qq/.lake/build/lib/lean:/home/runner/work/ABC-Exceptions/ABC-Exceptions/.lake/packages/aesop/.lake/build/lib/lean:/home/runner/work/ABC-Exceptions/ABC-Exceptions/.lake/packages/proofwidgets/.lake/build/lib/lean:/home/runner/work/ABC-Exceptions/ABC-Exceptions/.lake/packages/importGraph/.lake/build/lib/lean:/home/runner/work/ABC-Exceptions/ABC-Exceptions/.lake/packages/LeanSearchClient/.lake/build/lib/lean:/home/runner/work/ABC-Exceptions/ABC-Exceptions/.lake/packages/plausible/.lake/build/lib/lean:/home/runner/work/ABC-Exceptions/ABC-Exceptions/.lake/packages/mathlib/.lake/build/lib/lean:/home/runner/work/ABC-Exceptions/ABC-Exceptions/.lake/packages/checkdecls/.lake/build/lib/lean:/home/runner/work/ABC-Exceptions/ABC-Exceptions/.lake/build/lib/lean /home/runner/.elan/toolchains/leanprover--lean4---v4.21.0-rc3/bin/lean -Dpp.unicode.fun=true -DautoImplicit=false -DrelaxedAutoImplicit=false -Dlinter.style.longLine=true -Dlinter.style.multiGoal=true -Dlinter.oldObtain=true -Dlinter.flexible=true /home/runner/work/ABC-Exceptions/ABC-Exceptions/ABCExceptions/Section2.lean -R /home/runner/work/ABC-Exceptions/ABC-Exceptions -o /home/runner/work/ABC-Exceptions/ABC-Exceptions/.lake/build/lib/lean/ABCExceptions/Section2.olean -i /home/runner/work/ABC-Exceptions/ABC-Exceptions/.lake/build/lib/lean/ABCExceptions/Section2.ilean -c /home/runner/work/ABC-Exceptions/ABC-Exceptions/.lake/build/ir/ABCExceptions/Section2.c --json
warning: ABCExceptions/Section2.lean:376:10: `LT.lt.not_le` has been deprecated: use `LT.lt.not_ge` instead
warning: ABCExceptions/Section2.lean:622:58: `le_or_lt` has been deprecated: use `le_or_gt` instead
error: ABCExceptions/Section2.lean:819:4: type mismatch
a
has type
ℕ : Type
but is expected to have type
Fin n : Type
error: ABCExceptions/Section2.lean:821:2: simp made no progress
error: ABCExceptions/Section2.lean:825:8: type mismatch
a
has type
ℕ : Type
but is expected to have type
Fin n : Type
error: ABCExceptions/Section2.lean:827:2: simp made no progress
error: ABCExceptions/Section2.lean:833:62: type mismatch
K'
has type
ℕ : Type
but is expected to have type
Fin d : Type
error: ABCExceptions/Section2.lean:925:26: type mismatch
K - 1
has type
ℕ : outParam Type
but is expected to have type
Fin d : Type
error: ABCExceptions/Section2.lean:926:9: type mismatch
K
has type
ℕ : Type
but is expected to have type
Fin d : Type
error: ABCExceptions/Section2.lean:926:25: type mismatch
K - 1
has type
ℕ : outParam Type
but is expected to have type
Fin d : Type
error: ABCExceptions/Section2.lean:927:8: tactic 'rewrite' failed, did not find instance of the pattern in the target expression
↑(?m.51157 - ?m.51156)
data : ProofData
⊢ sorry - 1 = sorry
error: ABCExceptions/Section2.lean:969:26: type mismatch
K - 1
has type
ℕ : outParam Type
but is expected to have type
Fin d : Type
error: ABCExceptions/Section2.lean:973:12: unsolved goals
data : ProofData
h1n : 1 ≤ n
hnX : n ≤ X
⊢ ↑(sorry ()) + 1 = K
error: ABCExceptions/Section2.lean:1026:54: Application type mismatch: In the application
j ≠ K - 1
the argument
K - 1
has type
ℕ : outParam Type
but is expected to have type
Fin d : Type
error: ABCExceptions/Section2.lean:1032:18: type mismatch
K - 1
has type
ℕ : outParam Type
but is expected to have type
Fin d : Type
error: ABCExceptions/Section2.lean:1032:48: Application type mismatch: In the application
j ≠ K - 1
the argument
K - 1
has type
ℕ : outParam Type
but is expected to have type
Fin d : Type
error: ABCExceptions/Section2.lean:1035:19: type mismatch
K
has type
ℕ : Type
but is expected to have type
Fin d : Type
error: ABCExceptions/Section2.lean:1035:35: type mismatch
K - 1
has type
ℕ : outParam Type
but is expected to have type
Fin d : Type
error: ABCExceptions/Section2.lean:1036:18: tactic 'rewrite' failed, did not find instance of the pattern in the target expression
↑(?m.69614 - ?m.69613)
data : ProofData
⊢ sorry - 1 = sorry
error: ABCExceptions/Section2.lean:1051:37: simp made no progress
warning: ABCExceptions/Section2.lean:1273:9: `le_or_lt` has been deprecated: use `le_or_gt` instead
error: Lean exited with code 1
Some required builds logged failures:
- ABCExceptions.Section2
error: build failed
```

Run `lake update` and reproduce the failure described in the build output. Start with `lake-manifest.json` and `ABCExceptions/Section2.lean`, focusing on the reported type mismatches and failed simplifications around lines 819–1051. Done means the project builds successfully after the dependency update.

Written by the indexing model from the issue text.