graphics/krita: update to 5.1.2 maintenance release

graphics/krita/Makefile

 PORTNAME=	krita
-DISTVERSION=	5.1.1
-PORTREVISION=	1
+DISTVERSION=	5.1.2
 CATEGORIES=	graphics kde
 MASTER_SITES=	KDE/stable/${PORTNAME}/${DISTVERSION}
 DIST_SUBDIR=	KDE/${PORTNAME}

graphics/krita/distinfo

-TIMESTAMP = 1663277354
-SHA256 (KDE/krita/krita-5.1.1.tar.xz) = ab29c920edda22625837f9d815f4f269b2a3f5fd57ce6ac86e41ac8f8433f851
-SIZE (KDE/krita/krita-5.1.1.tar.xz) = 185119812
+TIMESTAMP = 1667597160
+SHA256 (KDE/krita/krita-5.1.2.tar.xz) = 037792632e7c48a781be893869751cebc1b67d6cb4e569fb09071b7e8c9f8a2c
+SIZE (KDE/krita/krita-5.1.2.tar.xz) = 185167696