Update dependency typescript to v4

Author: renovate-bot

testdata/package.json

@@ -4,6 +4,6 @@
     "@types/jsesc": "2.5.1",
     "@types/node": "12.12.47",
     "jsesc": "3.0.2",
-    "typescript": "3.9.6"
+    "typescript": "4.2.4"
   }
 }

testdata/yarn.lock

@@ -149,7 +149,7 @@ [email protected]:
   dependencies:
     tslib "^1.8.1"
 
-typescript@3.9.6:
-  version "3.9.6"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.6.tgz#8f3e0198a34c3ae17091b35571d3afd31999365a"
-  integrity sha512-Pspx3oKAPJtjNwE92YS05HQoY7z2SFyOpHo9MqJor3BXAGNaPUs83CuVp9VISFkSjyRfiTpmKuAYGJB7S7hOxw==
+typescript@4.2.4:
+  version "4.2.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.2.4.tgz#8610b59747de028fda898a8aef0e103f156d0961"
+  integrity sha512-V+evlYHZnQkaz8TRBuxTA92yZBPotr5H+WhQ7bD3hZUndx5tGOa1fuCgeSjxAzM1RiN5IzvadIXTVefuuwZCRg==