sysutils/py-diffoscope: Update to 229

Changelog:	https://diffoscope.org/news/diffoscope-229-released/

sysutils/py-diffoscope/Makefile

 PORTNAME=	diffoscope
-PORTVERSION=	228
+PORTVERSION=	229
 CATEGORIES=	sysutils python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}

sysutils/py-diffoscope/distinfo

-TIMESTAMP = 1670306025
-SHA256 (diffoscope-228.tar.gz) = ff5d656eb6699f0fcd077146d2af44307c34ba9190c7b531d0e5accc8aeef869
-SIZE (diffoscope-228.tar.gz) = 3164190
+TIMESTAMP = 1672165274
+SHA256 (diffoscope-229.tar.gz) = 4c592cd3e5dc26bae97f37b880fc66cac152c2aca4b8ce481a9b63768139d452
+SIZE (diffoscope-229.tar.gz) = 3164192