chore(package): update sinon-chai to version 3.2.0

Closes #275

Author: greenkeeper[bot]

package.json

@@ -84,7 +84,7 @@
     "rollup-plugin-vue": "^3.0.0",
     "sass-loader": "^6.0.6",
     "sinon": "^4.0.0",
-    "sinon-chai": "^2.14.0",
+    "sinon-chai": "^3.2.0",
     "style-loader": "^0.19.0",
     "uglify-js": "^3.1.3",
     "uppercamelcase": "^3.0.0",