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

@@ -9,7 +9,7 @@
   },
   "devDependencies": {
     "properties-reader": "2.3.0",
-    "webdriverio": "9.19.2",
+    "webdriverio": "9.20.0",
     "@wdio/local-runner": "9.19.2",
     "@wdio/concise-reporter": "^9.19.1",
     "@wdio/cli": "^9.20.0",