Catch updated to v2.2.1.
Catch updated to v2.2.1.

offa/seasocks,mattgodbolt/seasocks,offa/seasocks,mattgodbolt/seasocks,offa/seasocks,mattgodbolt/seasocks,mattgodbolt/seasocks,offa/seasocks,mattgodbolt/seasocks,mattgodbolt/seasocks,offa/seasocks,offa/seasocks