deps: update yamllint requirement from >=1.35 to >=1.38.0

Updates the requirements on [yamllint](https://github.com/adrienverge/yamllint) to permit the latest version.
- [Release notes](https://github.com/adrienverge/yamllint/releases)
- [Changelog](https://github.com/adrienverge/yamllint/blob/master/CHANGELOG.rst)
- [Commits](adrienverge/yamllint@v1.35.0...v1.38.0)

---
updated-dependencies:
- dependency-name: yamllint
  dependency-version: 1.38.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

requirements-dev.txt

@@ -2,5 +2,5 @@ pytest>=9.1.1
 pytest-xdist>=3.5
 PyYAML>=6.0
 Jinja2>=3.1.6
-yamllint>=1.35
+yamllint>=1.38.0
 ruff>=0.16.1,<0.17