Bump DavidAnson/markdownlint-cli2-action from 8 to 9 (#3191)

Bumps [DavidAnson/markdownlint-cli2-action](https://github.com/DavidAnson/markdownlint-cli2-action) from 8 to 9.
- [Release notes](https://github.com/DavidAnson/markdownlint-cli2-action/releases)
- [Commits](https://github.com/DavidAnson/markdownlint-cli2-action/compare/v8...v9)

---
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>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/lint.yml

@@ -15,7 +15,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Run markdownlint
-        uses: DavidAnson/markdownlint-cli2-action@v8
+        uses: DavidAnson/markdownlint-cli2-action@v9
         with:
           globs: |
             *.md