fix: deps/acorn-plugins/acorn-numeric-separator/package.json to reduc…

…e vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/npm:debug:20170905

deps/acorn-plugins/acorn-numeric-separator/package.json

@@ -39,7 +39,7 @@
     "acorn": "^6.0.0",
     "eslint": "^5.5.0",
     "eslint-plugin-node": "^8.0.1",
-    "mocha": "^6.0.2",
+    "mocha": "^8.3.0",
     "test262": "git+https://github.com/tc39/test262.git#de567d3aa5de4eaa11e00131d26b9fe77997dfb0",
     "test262-parser-runner": "^0.5.0"
   },