chore(deps): bump Staffbase/gha-workflows from 5.6.0 to 6.0.0

Bumps [Staffbase/gha-workflows](https://github.com/staffbase/gha-workflows) from 5.6.0 to 6.0.0.
- [Release notes](https://github.com/staffbase/gha-workflows/releases)
- [Commits](Staffbase/gha-workflows@v5.6.0...v6.0.0)

---
updated-dependencies:
- dependency-name: Staffbase/gha-workflows
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/auto-merge.yml

@@ -4,7 +4,7 @@ on: pull_request
 
 jobs:
   dependabot:
-    uses: Staffbase/gha-workflows/.github/workflows/template_automerge_dependabot.yml@v5.6.0
+    uses: Staffbase/gha-workflows/.github/workflows/template_automerge_dependabot.yml@v6.0.0
     secrets:
       app_id: ${{ vars.STAFFBASE_ACTIONS_APP_ID }}
       private_key: ${{ secrets.STAFFBASE_ACTIONS_PRIVATE_KEY }}