chore: update docker/build-push-action action to v6.18.0 (#4423)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/container-build.yml

@@ -35,7 +35,7 @@ jobs:
             type=ref,event=branch
             type=sha,prefix=,format=short
       - name: Build and push container image
-        uses: docker/build-push-action@1dc73863535b631f98b2378be8619f83b136f4a0 # v6.17.0
+        uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
         with:
           context: .
           file: Dockerfile.ci