And more fixing CI

Author: gershnik

.github/workflows/test.yml

@@ -49,6 +49,5 @@ jobs:
         run: pip install Nox
 
       - name: Test
-        shell: bash
         run: nox --sessions test --force-python ${{ steps.setup-python.outputs.python-path }}
 

src/repopulator/pgp_signer.py

@@ -6,6 +6,8 @@
 
 """All things related to PGP signing"""
 
+from __future__ import annotations
+
 import subprocess
 from pathlib import Path
 from typing import Optional