databases/py-psycopg-c: Update to 3.0.16

Changes:	https://github.com/psycopg/psycopg/blob/master/docs/news.rst

databases/py-psycopg-c/Makefile

 PORTNAME=	psycopg-c
-PORTVERSION=	3.0.15
+PORTVERSION=	3.0.16
 CATEGORIES=	databases python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}

databases/py-psycopg-c/distinfo

-TIMESTAMP = 1655398664
-SHA256 (psycopg-c-3.0.15.tar.gz) = 6de99cb85274135d5d34a40028f0c06f56af637026fbb85f7b38ce689e9a16e7
-SIZE (psycopg-c-3.0.15.tar.gz) = 594936
+TIMESTAMP = 1659161155
+SHA256 (psycopg-c-3.0.16.tar.gz) = 120f3f479ca24d21269412f08ebe699b3112f4b8c9e78b42bf743b8985d94d37
+SIZE (psycopg-c-3.0.16.tar.gz) = 594941