Bump typescript from 3.7.5 to 3.8.2 (#27)

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.7.5 to 3.8.2.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](https://github.com/Microsoft/TypeScript/commits)

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

package.json

@@ -37,7 +37,7 @@
     "jest-runtime": "^25.1.0",
     "prettier": "^1.17.1",
     "ts-jest": "^25.2.1",
-    "typescript": "^3.5.1",
+    "typescript": "^3.8.2",
     "typescript-formatter": "^7.2.2"
   }
 }