CI: Run cache after checkout

.github/workflows/lint.yml

@@ -20,6 +20,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - uses: actions/checkout@v2
       - uses: actions/cache@v1
         with:
           path: ~/.cache/pip
@@ -31,7 +32,6 @@ jobs:
         with:
           python-version: 3.8
           architecture: x64    
-      - uses: actions/checkout@v2
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip wheel