Bump gaurav-nelson/github-action-markdown-link-check from 1 to 1.0.12 (#309)

Bumps [gaurav-nelson/github-action-markdown-link-check](https://github.com/gaurav-nelson/github-action-markdown-link-check) from 1 to 1.0.12.
- [Release notes](https://github.com/gaurav-nelson/github-action-markdown-link-check/releases)
- [Commits](https://github.com/gaurav-nelson/github-action-markdown-link-check/compare/v1...1.0.12)

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

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

.github/workflows/md-link-checker.yml

@@ -10,4 +10,4 @@ jobs:
     # checkout to latest commit
     - uses: actions/checkout@master
     # run markdown linter
-    - uses: gaurav-nelson/github-action-markdown-link-check@v1
+    - uses: gaurav-nelson/github-action-markdown-link-check@1.0.12