Bump yamllint from 1.26.1 to 1.26.2 in /.github/workflows

Bumps [yamllint](https://github.com/adrienverge/yamllint) from 1.26.1 to 1.26.2.
- [Release notes](https://github.com/adrienverge/yamllint/releases)
- [Changelog](https://github.com/adrienverge/yamllint/blob/master/CHANGELOG.rst)
- [Commits](adrienverge/yamllint@v1.26.1...v1.26.2)

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

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

Author: dependabot[bot]

.github/workflows/constraints.txt

@@ -1,4 +1,4 @@
 pip==21.2.2
 ansible==4.3.0
-yamllint==1.26.1
+yamllint==1.26.2
 ansible-lint==5.1.2