devel/py-awscrt: Update to 0.16.16

Changes:	https://github.com/awslabs/aws-crt-python/releases

devel/py-awscrt/Makefile

 PORTNAME=	awscrt
-PORTVERSION=	0.16.15
+PORTVERSION=	0.16.16
 CATEGORIES=	devel python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}

devel/py-awscrt/distinfo

-TIMESTAMP = 1682354498
-SHA256 (awscrt-0.16.15.tar.gz) = 7d01524466389b5e1ec6a5712dbd01892574f469f3ae319a6ef73c5a7c718f1b
-SIZE (awscrt-0.16.15.tar.gz) = 28278141
+TIMESTAMP = 1682903070
+SHA256 (awscrt-0.16.16.tar.gz) = 13075df2c1d7942fe22327b6483274517ee0f6ae765c4e6b6ae9ef5b4c43a827
+SIZE (awscrt-0.16.16.tar.gz) = 28277445