build(deps): bump the ci group with 2 updates

Bumps the ci group with 2 updates: [korthout/backport-action](https://github.com/korthout/backport-action) and [docker/metadata-action](https://github.com/docker/metadata-action).


Updates `korthout/backport-action` from 2.1.1 to 2.2.0
- [Release notes](https://github.com/korthout/backport-action/releases)
- [Commits](korthout/backport-action@08bafb3...b982d29)

Updates `docker/metadata-action` from 5.0.0 to 5.3.0
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Commits](docker/metadata-action@96383f4...31cebac)

---
updated-dependencies:
- dependency-name: korthout/backport-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: ci
- dependency-name: docker/metadata-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: ci
...

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

.github/workflows/backport.yaml

@@ -20,7 +20,7 @@ jobs:
         with:
           ref: ${{ github.event.pull_request.head.sha }}
       - name: Create backport PRs
-        uses: korthout/backport-action@08bafb375e6e9a9a2b53a744b987e5d81a133191 # v2.1.1
+        uses: korthout/backport-action@b982d297e31f500652b2246cf26714796312bd23 # v2.2.0
         # xref: https://github.com/korthout/backport-action#inputs
         with:
           # Use token to allow workflows to be triggered for the created PR

.github/workflows/release.yml

@@ -59,7 +59,7 @@ jobs:
           password: ${{ secrets.DOCKER_FLUXCD_PASSWORD }}
       - name: Generate images meta
         id: meta
-        uses: docker/metadata-action@96383f45573cb7f253c731d3b3ab81c87ef81934 # v5.0.0
+        uses: docker/metadata-action@31cebacef4805868f9ce9a0cb03ee36c32df2ac4 # v5.3.0
         with:
           images: |
             fluxcd/${{ env.CONTROLLER }}