devel/py-marshmallow: Update to 3.21.1

Changes:	https://github.com/marshmallow-code/marshmallow/blob/dev/CHANGELOG.rst
		https://marshmallow.readthedocs.io/en/stable/changelog.html

devel/py-marshmallow/Makefile

 PORTNAME=	marshmallow
-PORTVERSION=	3.21.0
+PORTVERSION=	3.21.1
 CATEGORIES=	devel python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}

devel/py-marshmallow/distinfo

-TIMESTAMP = 1709390558
-SHA256 (marshmallow-3.21.0.tar.gz) = 20f53be28c6e374a711a16165fb22a8dc6003e3f7cda1285e3ca777b9193885b
-SIZE (marshmallow-3.21.0.tar.gz) = 176342
+TIMESTAMP = 1710712458
+SHA256 (marshmallow-3.21.1.tar.gz) = 4e65e9e0d80fc9e609574b9983cf32579f305c718afb30d7233ab818571768c3
+SIZE (marshmallow-3.21.1.tar.gz) = 176377