chore: enable GitHub Actions test job

Author: pengqun

.github/workflows/test.yml

@@ -16,8 +16,6 @@ permissions:
 jobs:
   test:
     runs-on: ubuntu-latest
-    # TODO: enable this when we have a way to set the secrets
-    if: false
     strategy:
       matrix:
         python-version: ["3.10", "3.11", "3.12"]