QA: Aqua/JET findings marked @test_broken pending fix

The grouped-tests CI QA group (GROUP=QA -> test/qa.jl) runs Aqua.test_all and JET static analysis. Two Aqua sub-checks currently fail and have been marked @test_broken (not skipped/deleted) so the QA group is green and the grouped-tests-ci PR can merge. They should be fixed and un-broken:

1. Aqua stale dependencies — isempty(stale_deps) failed. Stale deps: SnoopCompileCore, YAML (declared in [deps] but not actually loaded by the package). Fix by removing them from [deps] (or moving to test/weakdeps) or actually using them.

2. Aqua deps compat (deps_compat) — OrgMaintenanceScripts does not declare a [compat] entry for 7 deps: Dates, Distributed, LibGit2, Logging, Pkg, Printf, Random. Fix by adding compat bounds for these (stdlibs typically pinned to the supported Julia/stdlib versions).

All other Aqua sub-checks (method ambiguity, unbound type params, undefined exports, project_extras, extras/weakdeps compat, piracy, persistent tasks) pass, and JET static analysis is run. Only the two failing sub-checks above are @test_broken, each annotated with this issue link in test/qa.jl.

Ignore until reviewed by @ChrisRackauckas.

Start in test/qa.jl and run the grouped-tests QA group with GROUP=QA. Inspect the package dependency metadata for the stale-dependency and missing-compat findings, then remove the two @test_broken markers. Done means Aqua and the existing JET analysis pass with the QA group green.