Add Ubuntu 22.04 LTS to the CI

Author: arteymix

.github/workflows/main.yml

@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        os: [ubuntu-18.04, ubuntu-latest]
+        os: [ubuntu-18.04, ubuntu-20.04, ubuntu-22.04]
 
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it