[Snyk] Upgrade typescript from 3.8.3 to 3.9.2 (#324)

* fix: upgrade typescript from 3.8.3 to 3.9.2

Snyk has created this PR to upgrade typescript from 3.8.3 to 3.9.2.

See this package in NPM:
https://www.npmjs.com/package/typescript

See this project in Snyk:
https://app.snyk.io/org/uittorio/project/469ce1c4-28cc-4002-99e7-d3a4bac92a97?utm_source=github&utm_medium=upgrade-pr

* fix: upgrade typescript from 3.8.3 to 3.9.2

Snyk has created this PR to upgrade typescript from 3.8.3 to 3.9.2.

See this package in NPM:
https://www.npmjs.com/package/typescript

See this project in Snyk:
https://app.snyk.io/org/uittorio/project/469ce1c4-28cc-4002-99e7-d3a4bac92a97?utm_source=github&utm_medium=upgrade-pr

Co-authored-by: Vittorio Guerriero <[email protected]>

Author: snyk-bot

definitelyTypedTests/package-lock.json

@@ -17,6 +17,6 @@
   "dependencies": {
     "dotenv": "^8.2.0",
     "ttypescript": "^1.5.10",
-    "typescript": "^3.8.3"
+    "typescript": "^3.9.2"
   }
 }