Update gh workflow to ubuntu 22

Author: kdubois

.github/workflows/docs.yml

@@ -11,7 +11,7 @@ on:
 
 jobs:
   build-and-publish:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-22.04 
     steps:
     - name: Checkout project
       uses: actions/checkout@v2