chore(package): update jest-css-modules to version 2.1.0

Closes #87

Author: greenkeeper[bot]

package.json

@@ -88,7 +88,7 @@
     "eslint-plugin-standard": "^3.0.1",
     "http-errors": "^1.6.3",
     "jest": "^22.4.3",
-    "jest-css-modules": "^1.1.0",
+    "jest-css-modules": "^2.1.0",
     "jest-fetch-mock": "^1.5.0",
     "mini-css-extract-plugin": "^0.4.0",
     "prop-types": "^15.6.1",