chore(deps): update pytest-timeout requirement

Updates the requirements on [pytest-timeout](https://github.com/pytest-dev/pytest-timeout) to permit the latest version.
- [Commits](pytest-dev/pytest-timeout@2.2.0...2.4.0)

---
updated-dependencies:
- dependency-name: pytest-timeout
  dependency-version: 2.4.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements/testing.txt

@@ -17,7 +17,7 @@ pytest-asyncio<2
 
 # pytest-timeout
 # Note: per-test timeout so a hung test fails fast with a thread dump instead of stalling CI.
-pytest-timeout>=2.2,<3
+pytest-timeout>=2.4.0,<3
 
 # pytest-cov
 # Note: pytest-cov 7.1+ requires Python >=3.9; cap older interpreters below it.