ci: bump docker/build-push-action from 4 to 5 (#139)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 4 to 5.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v4...v5)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/packaging.yml

@@ -41,7 +41,7 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ github.token }}
       - name: Build multi-platform image
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v5
         with:
           context: .
           platforms: linux/amd64,linux/arm64
@@ -51,7 +51,7 @@ jobs:
       # Only export and upload the image if used for testing
       - name: Export image for test platform
         if: github.event_name != 'release'
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v5
         with:
           context: .
           push: false