Remove Node 14, and 16 from test matrix. Add Node 18 and Node 20 (#189)

build/azure-pipelines/pipeline.yml

@@ -36,8 +36,8 @@ extends:
         testPlatforms:
           - name: Linux
             nodeVersions:
-              - 14.x
-              - 16.x
+              - 18.x
+              - 20.x
 
         testSteps:
           - script: npm ci