Update testing.yaml

.gitea/workflows/testing.yaml

@@ -39,8 +39,8 @@ jobs:
         uses: harmon758/postgresql-action@v1
         with:
           postgresql version: "16"
-          postgresql user: $POSTGRES_USER
+          postgresql user: ${{ env.POSTGRES_USER }}
-          postgresql password: $POSTGRES_PASSWORD
+          postgresql password: ${{ env.POSTGRES_PASSWORD }}
-          postgresql db: $POSTGRES_DB
+          postgresql db: ${{ env.POSTGRES_DB }}
       - name: test
         run: make test