chore(deps): update dependency codecov to v3.8.3

Author: renovate[bot]

package.json

@@ -43,7 +43,7 @@
     "apollo-client": "2.6.10",
     "apollo-link-ws": "1.0.20",
     "babel-eslint": "10.1.0",
-    "codecov": "3.7.2",
+    "codecov": "3.8.3",
     "eslint": "5.16.0",
     "eslint-plugin-prettier": "3.1.4",
     "husky": "4.2.3",