devel/py-azure-core: Update to 1.13.0

Changes:	https://github.com/Azure/azure-sdk-for-python/releases
		https://github.com/Azure/azure-sdk-for-python/blob/master/sdk/core/azure-core/CHANGELOG.md

devel/py-azure-core/Makefile

 # Created by: Po-Chuan Hsieh <sunpoet@FreeBSD.org>
 
 PORTNAME=	azure-core
-PORTVERSION=	1.12.0
+PORTVERSION=	1.13.0
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}

devel/py-azure-core/distinfo

-TIMESTAMP = 1618320112
-SHA256 (azure-core-1.12.0.zip) = adf2b1c6ef150a92295b4b405f982a9d2c55c4846728cb14760ca592acbb09ec
-SIZE (azure-core-1.12.0.zip) = 236994
+TIMESTAMP = 1619198479
+SHA256 (azure-core-1.13.0.zip) = 624b46db407dbed9e03134ab65214efab5b5315949a1fbd6cd592c46fb272588
+SIZE (azure-core-1.13.0.zip) = 243844