chore(package): update @types/karma to version 1.7.3

Closes #9

Author: greenkeeper[bot]

package.json

@@ -69,7 +69,7 @@
     "@angular/platform-browser-dynamic": "^4.0.0",
     "@compodoc/compodoc": "^1.0.0-beta.9",
     "@types/jasmine": "^2.5.47",
-    "@types/karma": "^0.13.35",
+    "@types/karma": "^1.7.3",
     "@types/node": "^8.0.13",
     "@types/webpack": "^3.0.4",
     "@types/webpack-env": "^1.13.0",