Amap and PVS Studio reports in CI/CD (#1526)

.github/workflows/lint_python.yml

@@ -25,6 +25,7 @@ jobs:
         uses: actions/checkout@v2
         with:
           fetch-depth: 0
+          ref: ${{ github.event.pull_request.head.sha }}
 
       - name: 'Check code formatting'
         run: SET_GH_OUTPUT=1 FBT_TOOLCHAIN_PATH=/opt ./fbt lint_py