Update codecov to the latest version 🚀 (#1168)

* chore(package): update codecov to version 3.7.0

* chore(package): update lockfile package-lock.json

Co-authored-by: greenkeeper[bot] <23040076+greenkeeper[bot]@users.noreply.github.com>

Author: greenkeeper[bot]

package-lock.json

@@ -52,7 +52,7 @@
     "babel-plugin-minify-dead-code-elimination": "0.5.1",
     "babel-plugin-transform-inline-environment-variables": "0.4.3",
     "browserify": "16.5.1",
-    "codecov": "3.6.5",
+    "codecov": "3.7.0",
     "core-js": "3.6.5",
     "cross-env": "7.0.2",
     "eslint": "6.8.0",