build(deps): Bump docker/build-push-action from 3 to 4 (#31)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 3 to 4.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v3...v4)

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

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

.github/workflows/build.yml

@@ -85,7 +85,7 @@ jobs:
             org.opencontainers.image.licenses=PostgreSQL
       -
         name: Build and push
-        uses: docker/build-push-action@v3
+        uses: docker/build-push-action@v4
         with:
           platforms: ${{ env.PLATFORMS }}
           context: .

.github/workflows/update.yml

@@ -40,7 +40,7 @@ jobs:
         uses: docker/setup-buildx-action@v2
       -
         name: Build and export to Docker
-        uses: docker/build-push-action@v3
+        uses: docker/build-push-action@v4
         with:
           context: .
           load: true