chore(package): update cross-env to version 7.0.1

Closes #71

Author: greenkeeper[bot]

package.json

@@ -26,7 +26,7 @@
     "babel-eslint": "^10.0.2",
     "babel-plugin-wildcard": "^5.0.0",
     "babel-preset-stage-2": "^6.24.1",
-    "cross-env": "^6.0.0",
+    "cross-env": "^7.0.1",
     "eslint": "^6.0.1",
     "eslint-config-adenvt": "^4.0.0",
     "eslint-config-standard": "^13.0.1",