Ensure irb uses a consistent prompt format in tests on all Ruby versions

The default prompt format for irb changed in Ruby 3.3. Using the classic
format instead ensures the same result is achieved in all Ruby versions.

Author: mvz

features/03_testing_frameworks/cucumber/steps/command/wait_for_output_of_command.feature

@@ -12,7 +12,7 @@ Feature: Wait for output of commands
     """cucumber
     Feature: Run command
       Scenario: Run command
-        When I run `irb --prompt default` interactively
+        When I run `irb --prompt classic` interactively
         And I wait for output to contain "irb"
         And I type "puts 6 + 5"
         And I type "exit"
@@ -32,7 +32,7 @@ Feature: Wait for output of commands
     """cucumber
     Feature: Run command
       Scenario: Run command
-        When I run `irb --prompt default` interactively
+        When I run `irb --prompt classic` interactively
         And I wait for output to contain:
           \"\"\"
           irb(main):001:0>
@@ -49,7 +49,7 @@ Feature: Wait for output of commands
     """cucumber
     Feature: Run command
       Scenario: Run command
-        When I run `irb --prompt default` interactively
+        When I run `irb --prompt classic` interactively
         And I wait for output to contain:
           \"\"\"
           irb(main):001:0>