devel/py-tox: Update version 4.21.0=>4.21.1

Changelog: https://github.com/tox-dev/tox/releases/tag/4.21.1

devel/py-tox/Makefile

 PORTNAME=	tox
-DISTVERSION=	4.21.0
+DISTVERSION=	4.21.1
 CATEGORIES=	devel python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}

devel/py-tox/distinfo

-TIMESTAMP = 1728023892
-SHA256 (tox-4.21.0.tar.gz) = e64dd9847ff3a7ec90368be412d7efe61a39caf043222ffbe9ad638ea435f6f6
-SIZE (tox-4.21.0.tar.gz) = 187638
+TIMESTAMP = 1728129972
+SHA256 (tox-4.21.1.tar.gz) = b2ce4222772693b302d75e2e4f7727d67bb60925d740479bb09845098562589f
+SIZE (tox-4.21.1.tar.gz) = 187338