ci: upgrade to node.js 20 to publish (#1456)

Author: wenytang-ms

.azure-pipelines/release.yml

@@ -42,6 +42,10 @@ extends:
                 downloadType: specific
                 targetPath: '$(Build.SourcesDirectory)'
             steps:
+              - task: UseNode@1
+                displayName: 'Use Node.js 20.x'
+                inputs:
+                  version: '20.x'
               - task: AzureCLI@2
                 displayName: 'vsce publish'
                 inputs: