Bump avto-dev/markdown-lint from v1.4.0 to v1.5.0

Bumps [avto-dev/markdown-lint](https://github.com/avto-dev/markdown-lint) from v1.4.0 to v1.5.0.
- [Release notes](https://github.com/avto-dev/markdown-lint/releases)
- [Changelog](https://github.com/avto-dev/markdown-lint/blob/master/CHANGELOG.md)
- [Commits](https://github.com/avto-dev/markdown-lint/compare/v1.4.0...04d43ee9191307b50935a753da3b775ab695eceb)

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

.github/workflows/lint.yaml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2.3.4
-      - uses: avto-dev/markdown-lint@v1.4.0
+      - uses: avto-dev/markdown-lint@v1.5.0
         with:
           config: '.github/markdown-lint.yaml'
           args: './**/*.md'