Add continue-on-error to code quality check

.gitea/workflows/code-quality.yaml

@@ -7,6 +7,7 @@ jobs:
       - name: Check out repository code
         uses: actions/checkout@v3
       - name: Check for os.system (#2)
+        continue-on-error: true
         run: |
           git ls-files | xargs grep os.system
           exit $(git ls-files | xargs grep os.system | wc -l)