[rb] Skipping ruby tests in Firefox beta

Author: diemol

.skipped-tests

@@ -56,4 +56,5 @@
 -//rb/spec/integration/selenium/webdriver:element-chrome
 -//rb/spec/integration/selenium/webdriver:element-chrome-bidi
 -//rb/spec/integration/selenium/webdriver:element-chrome-remote
+-//rb/spec/integration/selenium/webdriver:action_builder-firefox-beta-remote
 -//rust/tests/...