Bump @types/jest from 23.3.10 to 23.3.12

Bumps [@types/jest](https://github.com/DefinitelyTyped/DefinitelyTyped) from 23.3.10 to 23.3.12.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits)

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

package.json

@@ -11,7 +11,7 @@
     "start": "tsc"
   },
   "dependencies": {
-    "@types/jest": "^23.3.10",
+    "@types/jest": "^23.3.12",
     "@types/node": "^10.12.18",
     "coveralls": "^3.0.2",
     "jest": "^23.6.0",