feature: readify: c8 v9.1.0

Author: coderaiser

package.json

@@ -47,7 +47,7 @@
   },
   "devDependencies": {
     "@cloudcmd/stub": "^3.0.0",
-    "c8": "^7.6.0",
+    "c8": "^9.1.0",
     "coveralls": "^3.0.0",
     "eslint": "^7.0.0",
     "eslint-plugin-node": "^11.0.0",