chore: update test dependencies

Author: renovate[bot]

package.json

@@ -31,7 +31,7 @@
     "bpmn-js-properties-panel": "^5.35.0",
     "camunda-bpmn-js-behaviors": "^1.9.1",
     "camunda-bpmn-moddle": "^7.0.1",
-    "chai": "^4.5.0",
+    "chai": "^6.0.0",
     "cross-env": "^10.0.0",
     "eslint": "^9.25.1",
     "eslint-plugin-bpmn-io": "^2.2.0",
@@ -43,7 +43,7 @@
     "karma-mocha": "^2.0.1",
     "karma-sinon-chai": "^2.0.2",
     "karma-webpack": "^5.0.1",
-    "mocha": "^10.8.2",
+    "mocha": "^11.0.0",
     "mocha-test-container-support": "^0.2.0",
     "npm-run-all2": "^8.0.0",
     "puppeteer": "~24.5.0",