chore(dependencies): Update jasmine-core requirement to ~2.9.1

Updates the requirements on [jasmine-core](https://github.com/jasmine/jasmine) to permit the latest version.
- [Release notes](https://github.com/jasmine/jasmine/releases)
- [Changelog](https://github.com/jasmine/jasmine/blob/master/RELEASE.md)
- [Commits](https://github.com/jasmine/jasmine/commits/v2.9.1)

package.json

@@ -52,7 +52,7 @@
     "@types/node": "~9.3.0",
     "codelyzer": "~4.1.0",
     "enhanced-resolve": "3.4.1",
-    "jasmine-core": "~2.8.0",
+    "jasmine-core": "~2.9.1",
     "jasmine-spec-reporter": "~4.2.1",
     "karma": "~2.0.0",
     "karma-chrome-launcher": "~2.2.0",