chore(package): update dependencies

https://greenkeeper.io/

Author: greenkeeper[bot]

package.json

@@ -10,23 +10,23 @@
     "webpack": "^2.2.0"
   },
   "dependencies": {
-    "ajv": "^4.11.2",
+    "ajv": "^5.0.0",
     "async": "^2.1.2",
     "loader-utils": "^1.0.2",
-    "webpack-sources": "^0.1.0"
+    "webpack-sources": "^0.2.3"
   },
   "devDependencies": {
     "codecov.io": "^0.1.2",
     "coveralls": "^2.11.2",
-    "css-loader": "^0.26.1",
-    "file-loader": "^0.9.0",
+    "css-loader": "^0.28.0",
+    "file-loader": "^0.11.1",
     "istanbul": "^0.4.5",
     "mocha": "^3.2.0",
-    "mocha-lcov-reporter": "1.2.0",
+    "mocha-lcov-reporter": "1.3.0",
     "raw-loader": "^0.5.1",
     "should": "^11.1.2",
     "standard-version": "^4.0.0",
-    "style-loader": "^0.13.0",
+    "style-loader": "^0.16.1",
     "webpack": "^2.2.0"
   },
   "homepage": "http://github.com/webpack/extract-text-webpack-plugin",