chore(deps): bump docker/build-push-action from 6 to 7 (#627)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6 to 7.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v6...v7)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/nightly.yml

@@ -45,7 +45,7 @@ jobs:
             type=raw,value=nightly
 
       - name: Push images to GitHub Container Registry
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           target: production

.github/workflows/release.yml

@@ -69,7 +69,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build docker image
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           target: production
@@ -110,7 +110,7 @@ jobs:
             latest=${{ needs.determine-release-type.outputs.release_type == 'release' }}
 
       - name: Push images to GitHub Container Registry
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           target: production