devel/py-iteration-utilities: Update to 0.12.1

- Add GitHub to MASTER_SITES

Changes:	https://github.com/MSeifert04/iteration_utilities/releases
		https://iteration-utilities.readthedocs.io/en/latest/CHANGES.html

devel/py-iteration-utilities/Makefile

 PORTNAME=	iteration-utilities
-PORTVERSION=	0.12.0
+PORTVERSION=	0.12.1
 CATEGORIES=	devel python
-MASTER_SITES=	PYPI
+MASTER_SITES=	PYPI \
+		https://github.com/MSeifert04/iteration_utilities/releases/download/v${PORTVERSION}/
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 DISTNAME=	iteration_utilities-${PORTVERSION}
 

devel/py-iteration-utilities/distinfo

-TIMESTAMP = 1697463098
-SHA256 (iteration_utilities-0.12.0.tar.gz) = cb5c6452a7f1cc7b1385cf94a892cae26dd321d9b97f11d5965ebf2466f6bb4c
-SIZE (iteration_utilities-0.12.0.tar.gz) = 155708
+TIMESTAMP = 1710712440
+SHA256 (iteration_utilities-0.12.1.tar.gz) = a17bd698bc65b796b265e56f02a8d71f517716dc066a4c507e12563795bfe3bd
+SIZE (iteration_utilities-0.12.1.tar.gz) = 158013