graphics/py-cairosvg: Update to 2.6.0

- Convert to USE_PYTHON=pytest

Changes:	https://github.com/Kozea/CairoSVG/releases

graphics/py-cairosvg/Makefile

@@ -1,5 +1,5 @@
 PORTNAME=	cairosvg
-PORTVERSION=	2.5.2
+PORTVERSION=	2.6.0
 CATEGORIES=	graphics python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
@@ -17,16 +17,17 @@ RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}cairocffi>=0:graphics/py-cairocffi@${PY_FLAV
 		${PYTHON_PKGNAMEPREFIX}defusedxml>=0:devel/py-defusedxml@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pillow>=0:graphics/py-pillow@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}tinycss2>=0:textproc/py-tinycss2@${PY_FLAVOR}
-TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pytest-cov>=0:devel/py-pytest-cov@${PY_FLAVOR} \
-		${PYTHON_PKGNAMEPREFIX}pytest-isort>=0:devel/py-pytest-isort@${PY_FLAVOR} \
-		${PYTHON_PKGNAMEPREFIX}pytest-flake8>=0:devel/py-pytest-flake8@${PY_FLAVOR} \
-		${PYTHON_PKGNAMEPREFIX}pytest-runner>=0:devel/py-pytest-runner@${PY_FLAVOR}
+TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}isort>=0:devel/py-isort@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}flake8>=0:devel/py-flake8@${PY_FLAVOR} \
 
-USES=		cpe python:3.6+
-USE_PYTHON=	autoplist concurrent distutils
+USES=		cpe python:3.7+
+USE_PYTHON=	autoplist concurrent distutils pytest
 
 NO_ARCH=	yes
 
 CPE_VENDOR=	courtbouillon
 
+post-patch:
+	@${LN} -s .. ${WRKSRC}/test_non_regression/cairosvg_reference
+
 .include <bsd.port.mk>

graphics/py-cairosvg/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1618320220
-SHA256 (CairoSVG-2.5.2.tar.gz) = b0b9929cf5dba005178d746a8036fcf0025550f498ca54db61873322384783bc
-SIZE (CairoSVG-2.5.2.tar.gz) = 8397659
+TIMESTAMP = 1674589932
+SHA256 (CairoSVG-2.6.0.tar.gz) = d5ec93e90101b3b6e82aa245d0546ee9b016cfda0b6344675159830d853d5d04
+SIZE (CairoSVG-2.6.0.tar.gz) = 8398114