update mocha to version 9

Daniel Black · Daniel Black · commit fea64b8788ca · 2022-01-06T15:44:56.000+07:00
diff --git a/package.json b/package.json
@@ -22,6 +22,6 @@
   "author": "Thomas Boutell",
   "license": "MIT",
   "devDependencies": {
-    "mocha": "^7.1.1"
+    "mocha": "^9.1.3"
   }
 }
