chore(deps): typescript 4.2.4

Author: urish

package-lock.json

@@ -35,7 +35,7 @@
     "rollup-plugin-commonjs": "^10.1.0",
     "rollup-plugin-node-resolve": "^5.2.0",
     "terser": "^4.8.0",
-    "typescript": "^3.9.7",
+    "typescript": "^4.2.4",
     "web-component-analyzer": "^1.1.6"
   },
   "dependencies": {