Bump DavidAnson/markdownlint-cli2-action from 14.0.0 to 15.0.0 (#290)

Bumps [DavidAnson/markdownlint-cli2-action](https://github.com/davidanson/markdownlint-cli2-action) from 14.0.0 to 15.0.0.
- [Release notes](https://github.com/davidanson/markdownlint-cli2-action/releases)
- [Commits](DavidAnson/markdownlint-cli2-action@v14.0.0...v15.0.0)

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

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
     steps:
       - uses: actions/[email protected]
       - name: Markdown Lint check
-        uses: DavidAnson/markdownlint-cli2-action@v14.0.0
+        uses: DavidAnson/markdownlint-cli2-action@v15.0.0
         with:
           globs: '**/*.md'
       - name: lychee Link Checker