Bump mathieudutour/github-tag-action from 5.6 to 6.0 (#6141)

Bumps [mathieudutour/github-tag-action](https://github.com/mathieudutour/github-tag-action) from 5.6 to 6.0.
- [Release notes](https://github.com/mathieudutour/github-tag-action/releases)
- [Commits](mathieudutour/github-tag-action@v5.6...v6.0)

---
updated-dependencies:
- dependency-name: mathieudutour/github-tag-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/merge.yaml

@@ -136,7 +136,7 @@ jobs:
 
     - name: Bump version and push tag
       id: tag_version
-      uses: mathieudutour/github-tag-action@v5.6
+      uses: mathieudutour/github-tag-action@v6.0
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}
         default_bump: patch