gci: Timeout for `test_commit_crash_splice`

It is not the fist time in this cycle that I am see the following Ci failure

```
-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
=========================== short test summary info ============================
FAILED tests/test_splicing.py::test_splice_out
FAILED tests/test_splicing.py::test_commit_crash_splice - Failed: Timeout >1200.0s
ERROR tests/test_splicing.py::test_commit_crash_splice - ValueError:
Node errors:
- lightningd-2: had BROKEN messages
- lightningd-2: Node exited with return code 1
Global errors:
= 2 failed, 100 passed, 566 skipped, 36 warnings, 1 error in 1680.41s (0:28:00) =
```

We should look into it