Bump codecov from 3.0.4 to 3.8.3

Bumps [codecov](https://github.com/codecov/codecov-node) from 3.0.4 to 3.8.3.
- [Release notes](https://github.com/codecov/codecov-node/releases)
- [Changelog](https://github.com/codecov/codecov-node/blob/master/CHANGELOG.md)
- [Commits](codecov/codecov-node@v3.0.4...v3.8.3)

---
updated-dependencies:
- dependency-name: codecov
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -79,7 +79,7 @@
     "@types/webpack-chunk-hash": "0.4.2",
     "@types/yargs": "10.0.0",
     "ajv": "6.7.0",
-    "codecov": "~3.0.4",
+    "codecov": "~3.8.3",
     "cpx": "~1.5.0",
     "cypress": "3.1.3",
     "execa": "0.8.0",