Bump yamllint from 1.26.2 to 1.26.3

Bumps [yamllint](https://github.com/adrienverge/yamllint) from 1.26.2 to 1.26.3.
- [Release notes](https://github.com/adrienverge/yamllint/releases)
- [Changelog](https://github.com/adrienverge/yamllint/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/adrienverge/yamllint/compare/v1.26.2...v1.26.3

)

---
updated-dependencies:
- dependency-name: yamllint
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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