Bump codecov from 1.0.1 to 3.6.5 (#3105)

Bumps [codecov](https://github.com/codecov/codecov-node) from 1.0.1 to 3.6.5.
- [Release notes](https://github.com/codecov/codecov-node/releases)
- [Commits](https://github.com/codecov/codecov-node/commits)

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -16,7 +16,7 @@
     "@types/node": "6.0.92",
     "browserify": "13.1.0",
     "chai": "^3.0",
-    "codecov": "^1.0.1",
+    "codecov": "^3.6.5",
     "coffeeify": "*",
     "coffeescript": "^1.12.7",
     "cucumber": "0.5.x",