[rb] Fix a test for changing the remote active protocol for Firefox

Author: pujagani

rb/spec/unit/selenium/webdriver/firefox/driver_spec.rb

@@ -81,7 +81,7 @@ def expect_request(body: nil, endpoint: nil)
                                                              browserName: 'firefox',
                                                              'moz:firefoxOptions': {
                                                                args: ['-f'],
-                                                               prefs: {'remote.active-protocols' => 3}
+                                                               prefs: {'remote.active-protocols' => 1}
                                                              },
                                                              'moz:debuggerAddress': true}}})
           expect { described_class.new(options: Options.new(**opts)) }.not_to raise_exception