Update azure pipelines image

20.04 is no longer supported by azure.

Author: VReaperV

azure-pipelines.yml

@@ -64,7 +64,7 @@ jobs:
 
   - job: Linux
     pool:
-      vmImage: 'ubuntu-20.04'
+      vmImage: 'ubuntu-22.04'
     strategy:
       matrix:
         GCC: