ci: fix missing source for codecov

.github/workflows/test.yml

@@ -19,6 +19,9 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -29,6 +32,7 @@ jobs:
         name: Test
         uses: docker/bake-action@v6
         with:
+          source: .
           targets: test
       -
         name: Upload coverage