databases/py-alembic: Update version 1.9.4=>1.10.2

Changelog: https://github.com/sqlalchemy/alembic/releases/tag/rel_1_10_2

databases/py-alembic/Makefile

 PORTNAME=	alembic
-PORTVERSION=	1.9.4
+PORTVERSION=	1.10.2
 CATEGORIES=	databases python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}

databases/py-alembic/distinfo

-TIMESTAMP = 1676907474
-SHA256 (alembic-1.9.4.tar.gz) = 4d3bd32ecdbb7bbfb48a9fe9e6d6fd6a831a1b59d03e26e292210237373e7db5
-SIZE (alembic-1.9.4.tar.gz) = 1139210
+TIMESTAMP = 1678478417
+SHA256 (alembic-1.10.2.tar.gz) = 457eafbdc0769d855c2c92cbafe6b7f319f916c80cf4ed02b8f394f38b51b89d
+SIZE (alembic-1.10.2.tar.gz) = 1148340