Sets skipLibCheck to true in ts3.8 typecheck

Author: antonis

dev-packages/type-check/ts3.8-test/tsconfig.build.json

@@ -3,7 +3,7 @@
     "index.ts",
   ],
   "compilerOptions": {
-    "skipLibCheck": false,
+    "skipLibCheck": true,
     "noEmit": true,
     "importHelpers": true,
     "types": [],