ci: use source for bake-action path context

.github/workflows/build_bench.yml

@@ -40,6 +40,7 @@ jobs:
       - name: Build and test
         uses: docker/bake-action@v6.0.0
         with:
+          source: .
           targets: bench-test
 
       - name: Login

.github/workflows/docker-build-push.yml

@@ -65,6 +65,7 @@ jobs:
       - name: Build
         uses: docker/bake-action@v6.0.0
         with:
+          source: .
           push: true
         env:
           REGISTRY_USER: localhost:5000/frappe