chore(deps): update dependency typescript to v3.9.9

Author: renovate-bot

package.json

@@ -86,7 +86,7 @@
     "ts-jest": "25.2.0",
     "tslint": "6.0.0",
     "tslint-config-prettier": "1.18.0",
-    "typescript": "3.7.5"
+    "typescript": "3.9.9"
   },
   "engines": {
     "node": ">=0.10",

yarn.lock

@@ -4345,10 +4345,10 @@ typedarray-to-buffer@^3.1.5:
   dependencies:
     is-typedarray "^1.0.0"
 
-typescript@3.7.5:
-  version "3.7.5"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.5.tgz#0692e21f65fd4108b9330238aac11dd2e177a1ae"
-  integrity sha512-/P5lkRXkWHNAbcJIiHPfRoKqyd7bsyCma1hZNUGfn20qm64T6ZBlrzprymeu918H+mB/0rIg2gGK/BXkhhYgBw==
+typescript@3.9.9:
+  version "3.9.9"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.9.tgz#e69905c54bc0681d0518bd4d587cc6f2d0b1a674"
+  integrity sha512-kdMjTiekY+z/ubJCATUPlRDl39vXYiMV9iyeMuEuXZh2we6zz80uovNN2WlAxmmdE/Z/YQe+EbOEXB5RHEED3w==
 
 uglify-js@^3.1.4:
   version "3.7.6"