www/py-google-cloud-vision: Update to 2.3.1

- Add LIBCST option

Changes:	https://github.com/googleapis/python-vision/releases

www/py-google-cloud-vision/Makefile

 PORTNAME=	google-cloud-vision
-PORTVERSION=	2.2.0
+PORTVERSION=	2.3.1
 CATEGORIES=	www python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
@@ -11,12 +11,16 @@ LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}google-api-core>=1.22.0<2.0.0:www/py-google-api-core@${PY_FLAVOR} \
-		${PYTHON_PKGNAMEPREFIX}libcst>=0.2.5:devel/py-libcst@${PY_FLAVOR} \
-		${PYTHON_PKGNAMEPREFIX}proto-plus>=1.4.0:devel/py-proto-plus@${PY_FLAVOR}
+		${PYTHON_PKGNAMEPREFIX}proto-plus>=1.15.0:devel/py-proto-plus@${PY_FLAVOR}
 
 USES=		python:3.6+
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
 
+OPTIONS_DEFINE=	LIBCST
+LIBCST_DESC=	Concrete Syntax Tree (CST) support
+
+LIBCST_RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}libcst>=0.2.5:devel/py-libcst@${PY_FLAVOR}
+
 .include <bsd.port.mk>

www/py-google-cloud-vision/distinfo

-TIMESTAMP = 1618320306
-SHA256 (google-cloud-vision-2.2.0.tar.gz) = 9a205be275739c141873fa9fbd7c3f9ec6170972c85d5c75e9b4c53b5db839a3
-SIZE (google-cloud-vision-2.2.0.tar.gz) = 706636
+TIMESTAMP = 1619198599
+SHA256 (google-cloud-vision-2.3.1.tar.gz) = 367aa6f9fd8e48a0514cea6e07b3d006f01aba7080f17a289ed0df92e87f7f84
+SIZE (google-cloud-vision-2.3.1.tar.gz) = 708688