graphics/py-mapclassify: Update to 2.7.0

Changes:	https://github.com/pysal/mapclassify/releases

graphics/py-mapclassify/Makefile

 PORTNAME=	mapclassify
-PORTVERSION=	2.6.1
+PORTVERSION=	2.7.0
 CATEGORIES=	graphics python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}

graphics/py-mapclassify/distinfo

-TIMESTAMP = 1696753676
-SHA256 (mapclassify-2.6.1.tar.gz) = 4441798d55a051e75206bf46dccfc8a8f8323aac8596d19961d11660c98677ca
-SIZE (mapclassify-2.6.1.tar.gz) = 3577980
+TIMESTAMP = 1720447714
+SHA256 (mapclassify-2.7.0.tar.gz) = 8ea7deef9c7f5edb6a7220d36ae877624d58359c899abb14ea3d8fa54229fc87
+SIZE (mapclassify-2.7.0.tar.gz) = 3598353