Switch from deprecated u2004 to u2204 image for github actions

Author: nzlosh

.github/workflows/build_and_test.yaml

@@ -12,7 +12,7 @@ jobs:
   # StackStorm-Exchange/ci/.github/workflows/pack-build_and_test.yaml@master
 
   build_and_test:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     name: 'Build and Test / Python ${{ matrix.python-version-short }}'
     strategy:
       matrix: