chore: change .yaml to .yml for consistency

[alexandear]

Change workflows extension from .yaml to .yml for consistency.

❯ find .github -type f -name '*.yaml'
.github/workflows/new-linter-checklist.yaml
.github/workflows/codeql.yaml

❯ find .github -type f -name '*.yml'
.github/boring-cyborg.yml
.github/workflows/pr-documentation.yml
.github/workflows/pr.yml
.github/workflows/post-release.yml
.github/workflows/tag.yml
.github/workflows/pr-extra.yml
.github/workflows/documentation.yml
.github/stale.yml
.github/ISSUE_TEMPLATE/feature_request.yml
.github/ISSUE_TEMPLATE/bug_report.yml
.github/ISSUE_TEMPLATE/config.yml
.github/dependabot.yml

[ldez]

The renaming of codeql.yaml to codeql.yml produces a problem.
I think it's because it doesn't match the content of the main branch.

EDIT: I was forced to remove this organization configuration and add a "tool" based on the new workflow to fix the problem.