fix(deps): update webdriverio monorepo

Author: renovate[bot]

package-lock.json

@@ -41,11 +41,11 @@
     "@serenity-js/serenity-bdd": "^3.36.2",
     "@serenity-js/web": "^3.36.2",
     "@serenity-js/webdriverio": "^3.36.2",
-    "@wdio/cli": "^9.20.1",
+    "@wdio/cli": "^9.21.1",
     "@wdio/globals": "^9.17.0",
-    "@wdio/local-runner": "^9.20.1",
+    "@wdio/local-runner": "^9.21.0",
     "@wdio/spec-reporter": "^9.20.0",
-    "webdriverio": "^9.20.1"
+    "webdriverio": "^9.21.0"
   },
   "devDependencies": {
     "@types/node": "^24.10.1",