Bump DavidAnson/markdownlint-cli2-action from 13 to 20

Bumps [DavidAnson/markdownlint-cli2-action](https://github.com/davidanson/markdownlint-cli2-action) from 13 to 20.
- [Release notes](https://github.com/davidanson/markdownlint-cli2-action/releases)
- [Commits](DavidAnson/markdownlint-cli2-action@v13...v20)

---
updated-dependencies:
- dependency-name: DavidAnson/markdownlint-cli2-action
  dependency-version: '20'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/code-quality.yml

@@ -48,7 +48,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Check Markdown format
-        uses: DavidAnson/markdownlint-cli2-action@v13
+        uses: DavidAnson/markdownlint-cli2-action@v20
         with:
           config: .github/workflows/configs/markdownlint/.markdownlint.json
       - name: Check Markdown links