fix: fixed user permissions in self-hosted runners (#29357)

.github/workflows/unit-tests.yml

@@ -31,6 +31,8 @@ jobs:
 
     name: python ${{ matrix.python-version }},django ${{ matrix.django-version }} ${{ matrix.test_module }}
     steps:
+      - name: sync directory owner
+        run: sudo chown runner:runner -R .*
       - uses: actions/checkout@v2
       - name: start mongodb service
         run: |