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] <support@github.com>

package.json

@@ -75,7 +75,7 @@
     "bootstrap": "^3.3.7",
     "chromedriver": "2.40.0",
     "cldr-data": "36.0.0",
-    "codecov": "~3.0.4",
+    "codecov": "~3.8.3",
     "cpx": "~1.5.0",
     "eslint": "7.6.0",
     "husky": "~0.14.3",