Log Message:
x11/py-sip6: Update to 6.8.1

This is a bugfix release to 6.8.0, which failed for many users,
including qgis.

This update drops the patch to change upstream's code surrounding
".abi3" because upstream said it was incorrect.  It seems that
suffixes really do change when using the limited API and we will have
to deal with that.

Tested with qgis.