Bump tables from 3.8.0 to 3.9.1 (#952)

Bumps [tables](https://github.com/PyTables/PyTables) from 3.8.0 to 3.9.1.
- [Release notes](https://github.com/PyTables/PyTables/releases)
- [Changelog](https://github.com/PyTables/PyTables/blob/master/RELEASE_NOTES.rst)
- [Commits](PyTables/PyTables@v3.8.0...v3.9.1)

---
updated-dependencies:
- dependency-name: tables
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements/requirements-test-optional.txt

@@ -2,4 +2,4 @@ h5py==3.10.0; implementation_name=='cpython'
 numpy==1.26.1
 pandas==2.1.2; implementation_name=='cpython'
 ruamel.yaml==0.18.3
-tables==3.8.0; implementation_name=='cpython'
+tables==3.9.1; implementation_name=='cpython'