fix: retry CI with standard actions syntax

.gitea/workflows/ci.yml

@@ -10,15 +10,13 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+      - name: Install dependencies
         run: |
-          git clone https://gitea.com/${{ repo }} . || true
-      - name: Setup Python
-        run: |
-          apt-get update && apt-get install -y python3 python3-pip
-      - name: Install deps
-        run: |
-          pip install --upgrade pip
+          python -m pip install --upgrade pip
           pip install -e ".[dev]"
       - name: Run tests
         run: |