Downgrade to chai 4 for commonjs support

Author: evert

package-lock.json

@@ -52,7 +52,7 @@
   "devDependencies": {
     "@curveball/kernel": "^0.21.0",
     "@curveball/validator": "^0.10.0",
-    "@types/chai": "^4.2.15",
+    "@types/chai": "^4.3.11",
     "@types/markdown-it": "^13.0.7",
     "@types/mocha": "^10.0.1",
     "@types/node": "^16.18.12",
@@ -61,7 +61,7 @@
     "@types/react-dom": "^18.0.5",
     "@typescript-eslint/eslint-plugin": "^5.36.1",
     "@typescript-eslint/parser": "^5.36.1",
-    "chai": "^5.0.0",
+    "chai": "^4.4.1",
     "eslint": "^8.23.0",
     "html-form-enhancer": "^0.1.9",
     "jsdom": "^23.2.0",