chore: Bump celestiaorg/.github from 0.3.3 to 0.4.0

Bumps [celestiaorg/.github](https://github.com/celestiaorg/.github) from 0.3.3 to 0.4.0.
- [Release notes](https://github.com/celestiaorg/.github/releases)
- [Commits](celestiaorg/.github@v0.3.3...v0.4.0)

---
updated-dependencies:
- dependency-name: celestiaorg/.github
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/lint.yml

@@ -34,4 +34,4 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: celestiaorg/.github/.github/actions/markdown-lint@v0.3.3
+      - uses: celestiaorg/.github/.github/actions/markdown-lint@v0.4.0