Fix corepack install (#93)

Author: jakebailey

build/templates/setup.yml

@@ -15,6 +15,7 @@ steps:
     displayName: Enable git long paths
 
   - script: |
+      COREPACK_ENABLE_STRICT=0 npm install -g corepack@latest
       corepack enable
       corepack enable npm
       corepack prepare pnpm@latest-8 --activate