Improve test suite error messages when string encodings are different

[adfoster-r7]

Pulling in changes from rspec/rspec-expectations#1425

Example of failing tests from #18877 failing

Before

No clear reason for failure

bundle exec rspec spec/lib/msf/core/exploit/remote/x11.rb
...snip...
  2) Msf::Exploit::Remote::X11 creates a graphical context request is expected to eq "7\u0000\u0005\u0000\u0000\u0000\u0000\u0001(\u0005\u0000\u0000\b\u0000\u0000\u0000\xFF\xFF\xFF\u0000"
     Failure/Error: expect(request.to_binary_s).to eq(creategc)
     
       expected: "7\u0000\u0005\u0000\u0000\u0000\u0000\u0001(\u0005\u0000\u0000\b\u0000\u0000\u0000\xFF\xFF\xFF\u0000"
            got: "7\x00\x05\x00\x00\x00\x00\x01(\x05\x00\x00\b\x00\x00\x00\xFF\xFF\xFF\x00"
     
       (compared using ==)
...snip...

After

Clear reason for failure

  2) Msf::Exploit::Remote::X11 handles GetProperty request is expected to eq "\u0014\u0000\u0006\u0000(\u0005\u0000\u0000\u0017\u0000\u0000\u0000\u001F\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\xE1\xF5\u0005"
     Failure/Error: expect(request.to_binary_s).to eq(get_property)
     
       expected: #<Encoding:UTF-8> "\u0014\u0000\u0006\u0000(\u0005\u0000\u0000\u0017\u0000\u0000\u0000\u001F\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\xE1\xF5\u0005"
            got: #<Encoding:ASCII-8BIT> "\x14\x00\x06\x00(\x05\x00\x00\x17\x00\x00\x00\x1F\x00\x00\x00\x00\x00\x00\x00\x00\xE1\xF5\x05"

Verification

• Ensure CI passes

[jheysel-r7]

Release Notes

This PR updates a number of rspec gems which help improve test suite error messages when string encodings are different.