chore(deps): update dependency typescript to v3.8.2

Author: renovate-bot

package.json

@@ -12,7 +12,7 @@
   "dependencies": {},
   "devDependencies": {
     "npm-run-all": "4.1.5",
-    "typescript": "3.7.5"
+    "typescript": "3.8.2"
   },
   "scripts": {
     "prepublish": "npm run build",