build: switch back to yarn v3 (#24923)

During the TS 4.7 update I had to update temporarily to Yarn v4, because v3 didn't support it yet. Now that TS 4.7 is supported, we can switch back.

Author: crisbeto

integration/yarn-pnp-compat/.yarn/releases/yarn-3.2.1.cjs

@@ -1,3 +1,3 @@
 nodeLinker: pnp
 
-yarnPath: .yarn/releases/yarn-4.0.0-rc.4.cjs
+yarnPath: .yarn/releases/yarn-3.2.1.cjs

integration/yarn-pnp-compat/.yarn/releases/yarn-4.0.0-rc.4.cjs

@@ -39,5 +39,5 @@
     "karma-jasmine-html-reporter": "~1.7.0",
     "typescript": "4.7.1-rc"
   },
-  "packageManager": "yarn@4.0.0-rc.4"
+  "packageManager": "yarn@3.2.1"
 }