chore: update test dependencies

Author: renovate[bot]

package.json

@@ -104,8 +104,8 @@
     "remark-preset-bpmn-io": "^0.2.1",
     "rollup": "^4.0.0",
     "rollup-plugin-license": "^3.4.0",
-    "sinon": "^17.0.0",
-    "sinon-chai": "^3.7.0",
+    "sinon": "^18.0.0",
+    "sinon-chai": "^4.0.0",
     "ts-expect": "^1.3.0",
     "typescript": "^5.0.0",
     "webpack": "^5.74.0"