chore(ci): use -cover flag also in CI

Signed-off-by: Lorenzo Susini <[email protected]>

Author: loresuso

.github/workflows/integration.yaml

@@ -66,4 +66,4 @@ jobs:
           go-version: 1.19
 
       - name: Run tests
-        run: go test ./...
+        run: go test -cover ./...