chore(*): update all Karma-related packages except Karma

The updated karma-chrome-launcher adds support for ChromeHeadless &
ChromeCanaryHeadless launchers; test with:

    karma start karma-jqlite.conf.js --browsers=ChromeCanaryHeadless

The updated karma-firefox-launcher disables multi-process which may increase
stability on Jenkins.

Closes angular#15966

Author: mgol

package.json

@@ -60,14 +60,14 @@
     "jasmine-node": "^2.0.0",
     "jasmine-reporters": "^2.2.0",
     "jquery": "^3.2.1",
-    "karma": "^1.1.2",
-    "karma-browserstack-launcher": "^1.0.1",
-    "karma-chrome-launcher": "^1.0.1",
-    "karma-firefox-launcher": "^1.0.0",
-    "karma-jasmine": "^1.0.2",
-    "karma-junit-reporter": "^1.1.0",
+    "karma": "^1.7.0",
+    "karma-browserstack-launcher": "^1.2.0",
+    "karma-chrome-launcher": "^2.1.1",
+    "karma-firefox-launcher": "^1.0.1",
+    "karma-jasmine": "^1.1.0",
+    "karma-junit-reporter": "^1.2.0",
     "karma-ng-scenario": "^1.0.0",
-    "karma-sauce-launcher": "^1.0.0",
+    "karma-sauce-launcher": "^1.1.0",
     "karma-script-launcher": "^1.0.0",
     "load-grunt-tasks": "^3.5.0",
     "lodash": "~2.4.1",