fix(deps): upgrade karma

package.json

@@ -69,20 +69,20 @@
     "i18next": "^6.0.1",
     "jasmine": "^2.5.3",
     "jasmine-core": "^2.5.2",
-    "karma": "^1.4.1",
-    "karma-chrome-launcher": "^2.0.0",
-    "karma-coverage": "^1.1.1",
-    "karma-coverage-istanbul-reporter": "^1.2.1",
-    "karma-firefox-launcher": "^1.0.0",
+    "karma": "^4.1.0",
+    "karma-chrome-launcher": "^2.2.0",
+    "karma-coverage": "^1.1.2",
+    "karma-coverage-istanbul-reporter": "^2.0.5",
+    "karma-firefox-launcher": "^1.1.0",
     "karma-mocha": "^1.3.0",
-    "karma-mocha-reporter": "^2.2.2",
+    "karma-mocha-reporter": "^2.2.5",
     "karma-phantomjs-launcher": "^1.0.4",
-    "karma-phantomjs-shim": "^1.4.0",
+    "karma-phantomjs-shim": "^1.5.0",
     "karma-safari-launcher": "^1.0.0",
-    "karma-sauce-launcher": "^1.1.0",
-    "karma-sinon-chai": "^1.2.4",
+    "karma-sauce-launcher": "^2.0.2",
+    "karma-sinon-chai": "^2.0.2",
     "karma-sourcemap-loader": "^0.3.7",
-    "karma-webpack": "^2.0.2",
+    "karma-webpack": "^4.0.2",
     "mkdirp": "^0.5.1",
     "mocha": "^3.2.0",
     "mocha-lcov-reporter": "^1.3.0",