update to ubuntu 22.04 since 20.04 is deprecated

Author: afrubin

.github/workflows/python-package.yml

@@ -12,7 +12,7 @@ on:
 jobs:
   build:
 
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     strategy:
       fail-fast: false
       matrix: