chore: update test dependencies

Author: renovate[bot]

package.json

@@ -67,7 +67,7 @@
     "babel-loader": "^9.1.3",
     "babel-plugin-inferno": "~5.1.0",
     "babel-plugin-istanbul": "^6.1.1",
-    "chai": "^4.3.6",
+    "chai": "^5.0.0",
     "cross-env": "^7.0.3",
     "dmn-js": "^16.3.2",
     "dmn-js-properties-panel": "^3.3.0",
@@ -96,7 +96,7 @@
     "rimraf": "^5.0.1",
     "rollup": "^3.26.2",
     "rollup-plugin-copy": "^3.4.0",
-    "sinon": "^17.0.0",
+    "sinon": "^18.0.0",
     "sinon-chai": "^3.7.0",
     "webpack": "^5.88.1"
   },