mypy auto install types

Author: leonardbinet

.github/workflows/python-package.yml

@@ -40,7 +40,7 @@ jobs:
     - name: Mypy check
       run: |
         pip install mypy
-        mypy lighttree
+        mypy --install-types --non-interactive lighttree
     - name: Test with pytest
       run: |
         pytest