docs: update ROLLING.md with instructions how to find driver version

ROLLING.md

@@ -6,8 +6,15 @@
 * regenerate API: `./scripts/download_driver_for_all_platforms.sh -f && ./scripts/generate_api.sh && ./scripts/update_readme.sh`
 * commit & send PR with the roll
 
+### Finding driver version
+
+For development versions of Playwright, you can find the latest version by looking at [publish_canary](https://github.com/microsoft/playwright/actions/workflows/publish_canary.yml) workflow -> `publish canary NPM & Publish canary Docker` -> `build & publish driver` step -> `PACKAGE_VERSION`
+<img width="960" alt="image" src="https://github.com/microsoft/playwright-java/assets/9798949/4f33a7f1-b39a-4179-8ae7-fb1d84094c75">
+
+
 # Updating Version
 
 ```bash
 ./scripts/set_maven_version.sh 1.15.0
 ```
+