Bump Ubuntu release

GitHub deprecating Ubuntu 20.04:
actions/runner-images#11101

Author: morancj

.github/workflows/pypi.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   deploy:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v2
     - uses: actions/setup-python@v2