[CI][PHPStan] Use php-webdriver/webdriver:dev-main

Author: Kocal

.github/workflows/ci.yml

@@ -35,6 +35,9 @@ jobs:
                   tools: phpstan,flex
                   extensions: zip
 
+            - name: Use php-webdriver/webdriver dev-main for PHP ^8.0 support
+              run: composer require php-webdriver/webdriver:dev-main#898f0be8267680fbf962e371ea39b7f7f6411bdb --no-update
+
             - name: Install dependencies
               uses: ramsey/composer-install@v3
               with: