Fixed missing checkout in workflows

Author: coordt

.github/workflows/test.yaml

@@ -29,6 +29,7 @@ jobs:
           - "3.12"
     runs-on: ${{ matrix.os }}
     steps:
+      - uses: actions/checkout@v4
       - uses: ./.github/actions/setup-python-and-git
         with:
           python-version: ${{ matrix.python-version }}