Update dependency typescript to v3.9.2

Author: renovate-bot

package.json

@@ -88,7 +88,7 @@
     "tslint-config-google": "1.0.1",
     "tslint-config-prettier": "1.18.0",
     "tslint-plugin-prettier": "2.3.0",
-    "typescript": "3.8.3"
+    "typescript": "3.9.2"
   },
   "typings": "./lib/index.d.ts",
   "types": "./lib/index.d.ts",

yarn.lock

@@ -12887,10 +12887,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@3.8.3:
-  version "3.8.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.8.3.tgz#409eb8544ea0335711205869ec458ab109ee1061"
-  integrity sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==
+typescript@3.9.2:
+  version "3.9.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.2.tgz#64e9c8e9be6ea583c54607677dd4680a1cf35db9"
+  integrity sha512-q2ktq4n/uLuNNShyayit+DTobV2ApPEo/6so68JaD5ojvc/6GClBipedB9zNWYxRSAlZXAe405Rlijzl6qDiSw==
 
 ua-parser-js@^0.7.18:
   version "0.7.19"