deps(ts): bump ts so it works with types/node

Author: JonasBa

package-lock.json

@@ -7,7 +7,8 @@
     "eslint-plugin-react": "^7.1.0",
     "jest": "^24.9.0",
     "lint-staged": "^4.0.2",
-    "prettier": "^1.19.1"
+    "prettier": "^1.19.1",
+    "typescript": "^4.8.4"
   },
   "scripts": {
     "precommit": "lint-staged",