Update ts-jest requirement from ^23.10.5 to ^24.0.0 (#16)

Updates the requirements on [ts-jest](https://github.com/kulshekhar/ts-jest) to permit the latest version.
- [Release notes](https://github.com/kulshekhar/ts-jest/releases)
- [Changelog](https://github.com/kulshekhar/ts-jest/blob/master/CHANGELOG.md)
- [Commits](kulshekhar/ts-jest@v23.10.5...v24.0.0)

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

package.json

@@ -34,7 +34,7 @@
     "jest": "^24.1.0",
     "np": "^4.0.2",
     "redux": "^4.0.1",
-    "ts-jest": "^23.10.5",
+    "ts-jest": "^24.0.0",
     "tslint": "^5.12.1",
     "tslint-ionic-rules": "0.0.21"
   },