Bump docker/build-push-action from 6.18.0 to 7.0.0 (#8707)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.18.0 to 7.0.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@2634353...d08e5c3)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-version: 7.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/docker-publish.yaml

@@ -22,7 +22,7 @@ jobs:
           username: weaveworkseksctlci
           password: ${{ secrets.DOCKER_HUB_PASSWORD }}
       - name: Build and push Docker image
-        uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 #6.18.0
+        uses: docker/build-push-action@d08e5c354a6adb9ed34480a06d141179aa583294 #7.0.0
         with:
           context: .
           push: true

.github/workflows/ecr-publish.yaml

@@ -41,7 +41,7 @@ jobs:
           images: ${{ env.REGISTRY }}/${{ env.REGISTRY_ALIAS }}/${{ env.REPOSITORY }}
 
       - name: Build and push container image to ECR
-        uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 #6.18.0
+        uses: docker/build-push-action@d08e5c354a6adb9ed34480a06d141179aa583294 #7.0.0
         with:
           context: .
           push: true