Bump DavidAnson/markdownlint-cli2-action from 11 to 12

Bumps [DavidAnson/markdownlint-cli2-action](https://github.com/davidanson/markdownlint-cli2-action) from 11 to 12.
- [Release notes](https://github.com/davidanson/markdownlint-cli2-action/releases)
- [Commits](DavidAnson/markdownlint-cli2-action@v11...v12)

---
updated-dependencies:
- dependency-name: DavidAnson/markdownlint-cli2-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/ci.yml

@@ -143,7 +143,7 @@ jobs:
  steps:
  - uses: actions/checkout@v4
  - name: Run Markdown Lint
- uses: DavidAnson/markdownlint-cli2-action@v11
+ uses: DavidAnson/markdownlint-cli2-action@v12
  with:
  globs: '**/*.md'