Bump typescript from 3.8.3 to 3.9.2 in /client

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.8.3 to 3.9.2.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](https://github.com/Microsoft/TypeScript/compare/v3.8.3...v3.9.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

client/package-lock.json

@@ -22777,9 +22777,9 @@
       }
     },
     "typescript": {
-      "version": "3.8.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
-      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
+      "version": "3.9.2",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.2.tgz",
+      "integrity": "sha512-q2ktq4n/uLuNNShyayit+DTobV2ApPEo/6so68JaD5ojvc/6GClBipedB9zNWYxRSAlZXAe405Rlijzl6qDiSw==",
       "dev": true
     },
     "ultron": {

client/package.json

@@ -67,7 +67,7 @@
     "jest-mock-axios": "^3.2.0",
     "react-scripts": "^3.4.1",
     "source-map-explorer": "^2.4.2",
-    "typescript": "^3.8.3"
+    "typescript": "^3.9.2"
   },
   "repository": {
     "type": "git",