www/py-flask-migrate: Switch to py-alembic 1.4.x

- This is required for updating databases/py-alembic

PR: 258790
Approved by: sunpoet (maintainer-timeout)

www/py-flask-migrate/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=	flask-migrate
 PORTVERSION=	3.1.0
+PORTREVISION=	1
 CATEGORIES=	www python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
@@ -13,7 +14,7 @@ LICENSE_FILE=	${WRKSRC}/LICENSE
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}Flask>=0.9:www/py-flask@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}flask-sqlalchemy>=1.0:databases/py-flask-sqlalchemy@${PY_FLAVOR} \
-		${PYTHON_PKGNAMEPREFIX}alembic>=0.7:databases/py-alembic@${PY_FLAVOR}
+		${PYTHON_PKGNAMEPREFIX}alembic14>=0.7:databases/py-alembic14@${PY_FLAVOR}
 
 USES=		python:3.6+
 USE_PYTHON=	autoplist concurrent distutils