Update .github/workflows/test_fast.yml

Author: wxtim

.github/workflows/test_fast.yml

@@ -140,7 +140,7 @@ jobs:
         run: etc/bin/shellchecker
 
       - name: MyPy
-        run: mypy --non-interactive
+        run: mypy
 
       - name: Towncrier - draft changelog
         uses: cylc/release-actions/towncrier-draft@v1