Merge pull request #293 from AArnott/ubuntu_update

Bump build agent to ubuntu 22

Author: AArnott

.github/workflows/build.yml

@@ -21,7 +21,7 @@ jobs:
       fail-fast: false
       matrix:
         os:
-        - ubuntu-20.04
+        - ubuntu-22.04
         - macos-latest
         - windows-latest
 

azure-pipelines/build.yml

@@ -28,7 +28,7 @@ jobs:
 
 - job: Linux
   pool:
-    vmImage: Ubuntu 20.04
+    vmImage: Ubuntu 22.04
   steps:
   - checkout: self
     fetchDepth: 0 # avoid shallow clone so nbgv can do its work.