chore(deps): bump zeebe-io/backport-action from 0.0.7 to 0.0.8 (#444)

Bumps [zeebe-io/backport-action](https://github.com/zeebe-io/backport-action) from 0.0.7 to 0.0.8.
- [Release notes](https://github.com/zeebe-io/backport-action/releases)
- [Commits](korthout/backport-action@v0.0.7...v0.0.8)

---
updated-dependencies:
- dependency-name: zeebe-io/backport-action
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

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

.github/workflows/backport.yml

@@ -22,7 +22,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Create backport PRs
-        uses: zeebe-io/backport-action@v0.0.7
+        uses: zeebe-io/backport-action@v0.0.8
         with:
           # Required
           # Token to authenticate requests to GitHub