Bump webdriverio from 9.19.2 to 9.20.0 in /testing

Bumps [webdriverio](https://github.com/webdriverio/webdriverio/tree/HEAD/packages/webdriverio) from 9.19.2 to 9.20.0.
- [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/v9.20.0/packages/webdriverio)

---
updated-dependencies:
- dependency-name: webdriverio
  dependency-version: 9.20.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

testing/package.json

@@ -15,7 +15,7 @@
     "@wdio/mocha-framework": "^9.20.0",
     "allure-commandline": "^2.34.1",
     "properties-reader": "^2.3.0",
-    "webdriverio": "9.19.2"
+    "webdriverio": "9.20.0"
   },
   "engines": {
     "node": ">= 22.18.0",