[Snyk] Upgrade typescript from 3.8.3 to 3.9.2 (#62)

* 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/freaktechnik/project/9d7e55df-a6bc-453c-9e81-1c3dd78fd733?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/freaktechnik/project/9d7e55df-a6bc-453c-9e81-1c3dd78fd733?utm_source=github&utm_medium=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -26,7 +26,7 @@
     "eslint-ava-rule-tester": "^4.0.0",
     "eslint-plugin-eslint-plugin": "^2.2.1",
     "nyc": "^15.0.1",
-    "typescript": "^3.8.3"
+    "typescript": "^3.9.2"
   },
   "peerDependencies": {
     "eslint": ">=3.0.0"