chore(deps): update dependency karma to ~1.7.0 [security]

Author: renovate[bot]

package.json

@@ -32,7 +32,7 @@
     "codelyzer": "~2.0.0",
     "jasmine-core": "~2.5.2",
     "jasmine-spec-reporter": "~3.2.0",
-    "karma": "~1.4.1",
+    "karma": "~1.7.0",
     "karma-chrome-launcher": "~2.1.1",
     "karma-cli": "~1.0.1",
     "karma-jasmine": "~1.1.0",