www/py-swapper: Update to 1.4.0

Changes:	https://github.com/openwisp/django-swappable-models/releases

www/py-swapper/Makefile

 PORTNAME=	swapper
-PORTVERSION=	1.3.0
-PORTREVISION=	3
+PORTVERSION=	1.4.0
 CATEGORIES=	www python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}

www/py-swapper/distinfo

-TIMESTAMP = 1643971144
-SHA256 (swapper-1.3.0.tar.gz) = 48a814f67be1abefe6c1495013808d1ff8e6b294f78384c88f5a93b81f7015fd
-SIZE (swapper-1.3.0.tar.gz) = 11991
+TIMESTAMP = 1724084664
+SHA256 (swapper-1.4.0.tar.gz) = 9e083af114ee0593241a7b877e3e0e7d3a580454f5d59016c667a5563306f8fe
+SIZE (swapper-1.4.0.tar.gz) = 12668