Bump docker/build-push-action from 6.7.0 to 6.9.0 (#1501)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.7.0 to 6.9.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@5cd11c3...4f58ea7)

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

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

.github/workflows/build.yml

@@ -67,7 +67,7 @@ jobs:
           images: ghcr.io/${{ github.repository }}
           tags: type=raw,value=latest,enable={{is_default_branch}}
       - name: Bygg og push docker image
-        uses: docker/build-push-action@5cd11c3a4ced054e52742c5fd54dca954e0edd85 # ratchet:docker/build-push-action@v4
+        uses: docker/build-push-action@4f58ea79222b3b9dc2c8bbdd6debcef730109a75 # ratchet:docker/build-push-action@v4
         id: build_push
         with:
           context: "."