Bump kiegroup/git-backporting from 4.8.1 to 4.8.3

Bumps [kiegroup/git-backporting](https://github.com/kiegroup/git-backporting) from 4.8.1 to 4.8.3.
- [Release notes](https://github.com/kiegroup/git-backporting/releases)
- [Changelog](https://github.com/kiegroup/git-backporting/blob/main/CHANGELOG.md)
- [Commits](kiegroup/git-backporting@v4.8.1...v4.8.3)

---
updated-dependencies:
- dependency-name: kiegroup/git-backporting
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

.github/workflows/backport.yaml

@@ -14,7 +14,7 @@ jobs:
     steps:
       - if: contains(github.event.pull_request.labels.*.name, '2.3.x')
         name: 2.3.x Backport
-        uses: kiegroup/[email protected].1
+        uses: kiegroup/[email protected].3
         with:
           target-branch: 2.3.x
           pull-request: ${{ github.event.pull_request.url }}
@@ -23,7 +23,7 @@ jobs:
 
       - if: contains(github.event.pull_request.labels.*.name, 'stable')
         name: Stable Backport
-        uses: kiegroup/[email protected].1
+        uses: kiegroup/[email protected].3
         with:
           target-branch: stable
           pull-request: ${{ github.event.pull_request.url }}