⬆️ Bump DavidAnson/markdownlint-cli2-action from 17.0.0 to 18.0.0 (#126)

Author: dependabot[bot]

.github/workflows/lint-markdown-files.yml

@@ -20,7 +20,7 @@ jobs:
     - name: Check out 🎉
       uses: actions/[email protected]
     - name: Run `markdownlint` 🎨
-      uses: DavidAnson/markdownlint-cli2-action@v17.0.0
+      uses: DavidAnson/markdownlint-cli2-action@v18.0.0
       with:
         config: .markdownlint.jsonc
         globs: '**/*.md'