Bump typescript from 3.8.3 to 3.9.3

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.8.3 to 3.9.3.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](https://github.com/Microsoft/TypeScript/compare/v3.8.3...v3.9.3)

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

package-lock.json

@@ -5656,9 +5656,9 @@
       }
     },
     "typescript": {
-      "version": "3.8.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
-      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
+      "version": "3.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.3.tgz",
+      "integrity": "sha512-D/wqnB2xzNFIcoBG9FG8cXRDjiqSTbG2wd8DMZeQyJlP1vfTkIxH4GKveWaEBYySKIg+USu+E+EDIR47SqnaMQ==",
       "dev": true
     },
     "uglify-js": {

package.json

@@ -35,7 +35,7 @@
     "prettier": "^2.0.5",
     "release-it": "^13.6.1",
     "start-server-and-test": "^1.11.0",
-    "typescript": "^3.8.3"
+    "typescript": "^3.9.3"
   },
   "repository": {
     "type": "git",