build(deps): bump molecule from 26.3.0 to 26.4.0 in the molecule group

Bumps the molecule group with 1 update: [molecule](https://github.com/ansible-community/molecule).


Updates `molecule` from 26.3.0 to 26.4.0
- [Release notes](https://github.com/ansible-community/molecule/releases)
- [Commits](https://github.com/ansible-community/molecule/compare/v26.3.0...v26.4.0)

---
updated-dependencies:
- dependency-name: molecule
  dependency-version: 26.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: molecule
...

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

tests/requirements.txt

@@ -1,4 +1,4 @@
 -r ../requirements.txt
 distlib==0.4.0 # required for building collections
-molecule==26.3.0
+molecule==26.4.0
 pytest-testinfra==10.2.2