Fix failing test due to the relative path output of minitest

minitest has been updated to output relative paths for failures at v5.21.0

minitest/minitest@e410bad

This patch fixes test to pass regardless of minitest versions.

Author: aeroastro

railties/test/generators/plugin_test_runner_test.rb

@@ -73,7 +73,7 @@ def test_output_inline_by_default
     create_test_file "post", pass: false
 
     output = run_test_command("test/post_test.rb")
-    expect = %r{Running:\n\nPostTest\nF\n\nFailure:\nPostTest#test_truth \[[^\]]+test/post_test.rb:6\]:\nwups!\n\nbin/test (/private)?#{plugin_path}/test/post_test.rb:4}
+    expect = %r{Running:\n\nPostTest\nF\n\nFailure:\nPostTest#test_truth \[.*?test/post_test.rb:6\]:\nwups!\n\nbin/test (/private)?#{plugin_path}/test/post_test.rb:4}
     assert_match expect, output
   end
 

railties/test/generators/test_runner_in_engine_test.rb

@@ -27,7 +27,7 @@ def test_rerun_snippet_is_relative_path
     create_test_file "post", pass: false
 
     output = run_test_command("test/post_test.rb")
-    expect = %r{Running:\n\nPostTest\nF\n\nFailure:\nPostTest#test_truth \[[^\]]+test/post_test\.rb:6\]:\nwups!\n\nbin/rails test test/post_test\.rb:4}
+    expect = %r{Running:\n\nPostTest\nF\n\nFailure:\nPostTest#test_truth \[.*?test/post_test\.rb:6\]:\nwups!\n\nbin/rails test test/post_test\.rb:4}
     assert_match expect, output
   end