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

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](docker/build-push-action@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>

Author: dependabot[bot]

.github/workflows/deploy.yml

@@ -30,7 +30,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and push authz image
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: services/authz/Dockerfile
@@ -39,7 +39,7 @@ jobs:
             ghcr.io/${{ github.repository }}/authz:sha-${{ github.sha }}
 
       - name: Build and push inventory image
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: services/inventory/Dockerfile
@@ -48,7 +48,7 @@ jobs:
             ghcr.io/${{ github.repository }}/inventory:sha-${{ github.sha }}
 
       - name: Build and push app image
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: app/Dockerfile