.github: exclude dput.py from mypy

mypy complains about the import missing, and the version of dput on pypi
is ancient. Just skip this file during CI runs for the time being.

Author: enr0n

.github/workflows/qa.yaml

@@ -36,7 +36,7 @@ jobs:
     - name: poetry install
       run: poetry install
     - name: pytest
-      run: poetry run mypy --check-untyped-defs .
+      run: poetry run mypy --check-untyped-defs . --exclude ubuntu_lint/dput.py
   test:
     runs-on: ubuntu-latest
     steps: