Use quit! command instead of kill! command

Author: ono-max

lib/debug/server_cdp.rb

@@ -489,7 +489,7 @@ def process
                         id: SecureRandom.hex
         when 'Runtime.terminateExecution'
           send_response req
-          @q_msg << 'kill!'
+          @q_msg << 'quit!'
           pause unless SESSION.in_subsession?
         when 'Page.startScreencast', 'Emulation.setTouchEmulationEnabled', 'Emulation.setEmitTouchEventsForMouse',
           'Runtime.compileScript', 'Page.getResourceContent', 'Overlay.setPausedInDebuggerMessage',