Upgrade style-loader to fix CSS modules issue (#3283)

* Upgrade style-loader to 0.19.0 to fix webpack-contrib/style-loader#182

* Update to last version

packages/gatsby/package.json

@@ -102,7 +102,7 @@
     "socket.io": "^2.0.3",
     "static-site-generator-webpack-plugin": "^3.4.1",
     "string-similarity": "^1.2.0",
-    "style-loader": "^0.13.0",
+    "style-loader": "^0.19.1",
     "type-of": "^2.0.1",
     "url-loader": "^0.5.7",
     "v8-compile-cache": "^1.1.0",

yarn.lock

@@ -11080,6 +11080,12 @@ sc-simple-broker@~2.1.0:
   dependencies:
     sc-channel "~1.1.0"
 
+schema-utils@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-0.3.0.tgz#f5877222ce3e931edae039f17eb3716e7137f8cf"
+  dependencies:
+    ajv "^5.0.0"
+
 scroll-behavior@^0.9.1:
   version "0.9.4"
   resolved "https://registry.yarnpkg.com/scroll-behavior/-/scroll-behavior-0.9.4.tgz#73b4a0eae3e59c0b8f3b6fc1ff78f054a513e79c"
@@ -11953,11 +11959,12 @@ strong-log-transformer@^1.0.6:
     moment "^2.6.0"
     through "^2.3.4"
 
-style-loader@^0.13.0:
-  version "0.13.2"
-  resolved "https://registry.yarnpkg.com/style-loader/-/style-loader-0.13.2.tgz#74533384cf698c7104c7951150b49717adc2f3bb"
+style-loader@^0.19.1:
+  version "0.19.1"
+  resolved "https://registry.yarnpkg.com/style-loader/-/style-loader-0.19.1.tgz#591ffc80bcefe268b77c5d9ebc0505d772619f85"
   dependencies:
     loader-utils "^1.0.2"
+    schema-utils "^0.3.0"
 
 styled-jsx@^1.0.10:
   version "1.0.11"