maint: downgrade mocha as 11.7.1 causes internal error in node24 (#116)

Author: jameslan

package-lock.json

@@ -52,7 +52,7 @@
         "eslint-plugin-chai-friendly": "^1.1.0",
         "eslint-plugin-import": "^2.32.0",
         "markdown-it-footnote": "^4.0.0",
-        "mocha": "^11.7.1",
+        "mocha": "^11.6.0",
         "sinon": "^21.0.0",
         "sinon-chai": "^4.0.0",
         "ts-node": "^10.9.2",