hygiene: switch to terrapin

build/azure-pipelines/product-hygiene.yml

@@ -30,6 +30,12 @@ steps:
       git pull --no-rebase https://github.com/$(VSCODE_MIXIN_REPO).git $(node -p "require('./package.json').distro")
     displayName: Merge distro
 
+  - script: |
+      npx https://aka.ms/enablesecurefeed standAlone
+    displayName: Switch to Terrapin packages
+    timeoutInMinutes: 5
+    condition: and(succeeded(), eq(variables['ENABLE_TERRAPIN'], 'true'))
+
   - script: |
       mkdir -p .build
       echo -n $(VSCODE_ARCH) > .build/arch