chore(deps-dev): bump codecov from 3.6.5 to 3.7.0

Bumps [codecov](https://github.com/codecov/codecov-node) from 3.6.5 to 3.7.0.
- [Release notes](https://github.com/codecov/codecov-node/releases)
- [Commits](https://github.com/codecov/codecov-node/compare/v3.6.5...v3.7.0)

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

web3.js/package-lock.json

@@ -6686,9 +6686,9 @@
       "dev": true
     },
     "codecov": {
-      "version": "3.6.5",
+      "version": "3.7.0",
-      "resolved": "https://registry.npmjs.org/codecov/-/codecov-3.6.5.tgz",
+      "resolved": "https://registry.npmjs.org/codecov/-/codecov-3.7.0.tgz",
-      "integrity": "sha512-v48WuDMUug6JXwmmfsMzhCHRnhUf8O3duqXvltaYJKrO1OekZWpB/eH6iIoaxMl8Qli0+u3OxptdsBOYiD7VAQ==",
+      "integrity": "sha512-uIixKofG099NbUDyzRk1HdGtaG8O+PBUAg3wfmjwXw2+ek+PZp+puRvbTohqrVfuudaezivJHFgTtSC3M8MXww==",
       "dev": true,
       "requires": {
         "argv": "0.0.2",