ci(deps): bump prologic/action-markdownlint from 0.7 to 0.9 (#533)

Bumps [prologic/action-markdownlint](https://github.com/prologic/action-markdownlint) from 0.7 to 0.9.
- [Release notes](https://github.com/prologic/action-markdownlint/releases)
- [Commits](reviewdog/action-markdownlint@v0.7...v0.9)

---
updated-dependencies:
- dependency-name: prologic/action-markdownlint
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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/pr.yml

@@ -85,7 +85,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Lint markdown files
-        uses: prologic/action-markdownlint@v0.7
+        uses: prologic/action-markdownlint@v0.9
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           reporter: github-pr-check