fix(package): update stylelint-processor-styled-components to version 1.7.0

Closes #59

Author: greenkeeper[bot]

package.json

@@ -57,7 +57,7 @@
     "styled-components": "4.1.1",
     "stylelint-config-recommended": "2.1.0",
     "stylelint-config-styled-components": "0.1.1",
-    "stylelint-processor-styled-components": "1.5.1",
+    "stylelint-processor-styled-components": "1.7.0",
     "stylelint": "9.8.0",
     "terser-webpack-plugin": "1.1.0",
     "url-loader": "1.1.2",