pip: bump pybind11 from 3.0.3 to 3.0.4 in /.github/resources

Bumps [pybind11](https://github.com/pybind/pybind11) from 3.0.3 to 3.0.4.
- [Release notes](https://github.com/pybind/pybind11/releases)
- [Changelog](https://github.com/pybind/pybind11/blob/master/docs/changelog.md)
- [Commits](pybind/pybind11@v3.0.3...v3.0.4)

---
updated-dependencies:
- dependency-name: pybind11
  dependency-version: 3.0.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/resources/coverity-requirements.txt

@@ -5,4 +5,4 @@
 pip == 26.0.1
 setuptools >= 78.1.1
 wheel == 0.46.3
-pybind11 == 3.0.3
+pybind11 == 3.0.4