use terrapin

build/azure-pipelines/linux/product-build-linux.yml

@@ -52,6 +52,10 @@ steps:
     git merge $(node -p "require('./package.json').distro")
   displayName: Merge distro
 
+- script: |
+    npx https://aka.ms/enablesecurefeed
+  displayName: Switch to Terrapin packages
+
 - script: |
     echo -n $VSCODE_ARCH > .build/arch
   displayName: Prepare arch cache flag