build(deps-dev): Bump webdriverio from 9.20.1 to 9.21.0 (#1404)

Bumps [webdriverio](https://github.com/webdriverio/webdriverio/tree/HEAD/packages/webdriverio) from 9.20.1 to 9.21.0.
- [Release notes](https://github.com/webdriverio/webdriverio/releases)
- [Changelog](https://github.com/webdriverio/webdriverio/blob/main/CHANGELOG.md)
- [Commits](https://github.com/webdriverio/webdriverio/commits/v9.21.0/packages/webdriverio)

---
updated-dependencies:
- dependency-name: webdriverio
  dependency-version: 9.21.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -39,6 +39,6 @@
     "@wdio/spec-reporter": "9.20.0",
     "eslint": "^9.29.0",
     "typescript": "^5.8.3",
-    "webdriverio": "9.20.1"
+    "webdriverio": "9.21.0"
   }
 }