Bump docker/build-push-action from 6.2.0 to 6.8.0 (#169)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.2.0 to 6.8.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v6.2.0...v6.8.0)

---
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: Danielle Foré <[email protected]>

.github/workflows/docker.yml

@@ -45,7 +45,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build & push the base image to local registry
-        uses: docker/build-push-action@v6.2.0
+        uses: docker/build-push-action@v6.8.0
         with:
           context: .
           push: true
@@ -65,7 +65,7 @@ jobs:
           echo "additional_tags=,ghcr.io/${{ github.repository }}/runtime:${{ matrix.version }}" >> $GITHUB_ENV
 
       - name: Build & push the ${{ matrix.version }}-${{ matrix.arch }} image
-        uses: docker/build-push-action@v6.2.0
+        uses: docker/build-push-action@v6.8.0
         with:
           context: .
           push: true