Use the global cache in sandbox mode

so we aren't re-caching dependencies each time we run sandbox

scripts/utils/yarn.ts

@@ -25,7 +25,7 @@ export const addPackageResolutions = async ({ cwd, dryRun }: YarnOptions) => {
 export const installYarn2 = async ({ cwd, dryRun }: YarnOptions) => {
   const command = [
     `yarn set version berry`,
-    // Use the global cache so we aren't re-caching dependencies each time
+    // Use the global cache so we aren't re-caching dependencies each time we run sandbox
     `yarn config set enableGlobalCache true`,
     `yarn config set nodeLinker node-modules`,
   ];