build(deps): bump zeebe-io/backport-action from 0.0.9 to 1.0.0

Bumps [zeebe-io/backport-action](https://github.com/zeebe-io/backport-action) from 0.0.9 to 1.0.0.
- [Release notes](https://github.com/zeebe-io/backport-action/releases)
- [Commits](https://github.com/zeebe-io/backport-action/compare/v0.0.9...v1.0.0)

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

Signed-off-by: dependabot[bot] <[e-mail]>

.github/workflows/backport.yml

···
 jobs:
   backport:
     permissions:
-      contents: write  # for zeebe-io/backport-action to create branch
-      pull-requests: write  # for zeebe-io/backport-action to create PR to backport
+      contents: write # for korthout/backport-action to create branch
+      pull-requests: write # for korthout/backport-action to create PR to backport
     name: Backport Pull Request
     if: github.repository_owner == 'NixOS' && github.event.pull_request.merged == true && (github.event_name != 'labeled' || startsWith('backport', github.event.label.name))
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
         with:
-          # required to find all branches
-          fetch-depth: 0
           ref: ${{ github.event.pull_request.head.sha }}
       - name: Create backport PRs
-        uses: zeebe-io/backport-action@v0.0.9
+        uses: korthout/backport-action@v1.0.0
         with:
-          # Config README: https://github.com/zeebe-io/backport-action#backport-action
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          github_workspace: ${{ github.workspace }}
+          # Config README: https://github.com/korthout/backport-action#backport-action
           pull_description: |-
             Bot-based backport to `${target_branch}`, triggered by a label in #${pull_number}.