build(deps): bump korthout/backport-action from 3.3.0 to 3.4.1

Bumps [korthout/backport-action](https://github.com/korthout/backport-action) from 3.3.0 to 3.4.1.
- [Release notes](https://github.com/korthout/backport-action/releases)
- [Commits](ca4972adce...d07416681c)

---
updated-dependencies:
- dependency-name: korthout/backport-action
  dependency-version: 3.4.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/backport.yml

@@ -48,7 +48,7 @@ jobs:
 
       - name: Create backport PRs
         id: backport
-        uses: korthout/backport-action@ca4972adce8039ff995e618f5fc02d1b7961f27a # v3.3.0
+        uses: korthout/backport-action@d07416681cab29bf2661702f925f020aaa962997 # v3.4.1
         with:
           # Config README: https://github.com/korthout/backport-action#backport-action
           copy_labels_pattern: 'severity:\ssecurity'