chore: upgrade to fork-ts-checker-webpack-plugin to v1

Technically not a breaking change, but worth a separate commit.

Author: haoqunjiang

packages/@vue/cli-plugin-typescript/package.json

@@ -25,7 +25,7 @@
   "dependencies": {
     "@types/webpack-env": "^1.13.9",
     "@vue/cli-shared-utils": "^3.7.0",
-    "fork-ts-checker-webpack-plugin": "^0.5.2",
+    "fork-ts-checker-webpack-plugin": "^1.2.0",
     "globby": "^9.2.0",
     "ts-loader": "^5.3.3",
     "tslint": "^5.15.0",