Bump nosborn/github-action-markdown-cli from 3.3.0 to 3.4.0

Bumps [nosborn/github-action-markdown-cli](https://github.com/nosborn/github-action-markdown-cli) from 3.3.0 to 3.4.0.
- [Release notes](https://github.com/nosborn/github-action-markdown-cli/releases)
- [Commits](nosborn/github-action-markdown-cli@v3.3.0...v3.4.0)

---
updated-dependencies:
- dependency-name: nosborn/github-action-markdown-cli
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/markdownlint.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@master
-    - uses: nosborn/github-action-markdown-cli@v3.3.0
+    - uses: nosborn/github-action-markdown-cli@v3.4.0
       name: Markdownlint
       with:
         files: .