Bump @wdio/allure-reporter from 9.19.2 to 9.20.0 in /testing

Bumps [@wdio/allure-reporter](https://github.com/webdriverio/webdriverio/tree/HEAD/packages/wdio-allure-reporter) 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/wdio-allure-reporter)

---
updated-dependencies:
- dependency-name: "@wdio/allure-reporter"
  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

@@ -8,7 +8,7 @@
     "allure-report": "allure generate ./build/reports/allure --output ./build/reports/allure-report --clean --single-file"
   },
   "devDependencies": {
-    "@wdio/allure-reporter": "9.19.2",
+    "@wdio/allure-reporter": "9.20.0",
     "@wdio/cli": "^9.20.0",
     "@wdio/concise-reporter": "^9.20.0",
     "@wdio/local-runner": "^9.19.1",