build(deps): bump typescript from 3.7.3 to 3.8.3

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.7.3 to 3.8.3.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v3.7.3...v3.8.3)

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

package.json

@@ -40,7 +40,7 @@
     "rss": "^1.2.2",
     "ts-node-dev": "^1.0.0-pre.44",
     "twig": "^1.14.0",
-    "typescript": "^3.7.3"
+    "typescript": "^3.8.3"
   },
   "devDependencies": {
     "jest": "^24.9.0",