chore(deps-dev): bump codecov from 3.2.0 to 3.3.0

Bumps [codecov](https://github.com/codecov/codecov-node) from 3.2.0 to 3.3.0.
- [Release notes](https://github.com/codecov/codecov-node/releases)
- [Commits](https://github.com/codecov/codecov-node/commits/v3.3.0)

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

web3.js/package-lock.json

@@ -4737,9 +4737,9 @@
       "dev": true
     },
     "codecov": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/codecov/-/codecov-3.2.0.tgz",
-      "integrity": "sha512-3NJvNARXxilqnqVfgzDHyVrF4oeVgaYW1c1O6Oi5mn93exE7HTSSFNiYdwojWW6IwrCZABJ8crpNbKoo9aUHQw==",
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/codecov/-/codecov-3.3.0.tgz",
+      "integrity": "sha512-S70c3Eg9SixumOvxaKE/yKUxb9ihu/uebD9iPO2IR73IdP4i6ZzjXEULj3d0HeyWPr0DqBfDkjNBWxURjVO5hw==",
       "dev": true,
       "requires": {
         "argv": "^0.0.2",
@@ -4750,9 +4750,9 @@
       },
       "dependencies": {
         "js-yaml": {
-          "version": "3.12.1",
-          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.12.1.tgz",
-          "integrity": "sha512-um46hB9wNOKlwkHgiuyEVAybXBjwFUV0Z/RaHJblRd9DXltue9FTYvzCr9ErQrK9Adz5MU4gHWVaNUfdmrC8qA==",
+          "version": "3.13.0",
+          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.13.0.tgz",
+          "integrity": "sha512-pZZoSxcCYco+DIKBTimr67J6Hy+EYGZDY/HCWC+iAEA9h1ByhMXAIVUXMcMFpOCxQ/xjXmPI2MkDL5HRm5eFrQ==",
           "dev": true,
           "requires": {
             "argparse": "^1.0.7",