sysutils/py-plumbum: Update to 1.8.2

Changes:	https://github.com/tomerfiliba/plumbum/releases

sysutils/py-plumbum/Makefile

 PORTNAME=	plumbum
-PORTVERSION=	1.8.1
-PORTREVISION=	2
+PORTVERSION=	1.8.2
 CATEGORIES=	sysutils python
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 MASTER_SITES=	PYPI

sysutils/py-plumbum/distinfo

-TIMESTAMP = 1674590006
-SHA256 (plumbum-1.8.1.tar.gz) = 88a40fc69247d0cd585e21ca169b3820f46c484535102e16455d2202727bb37b
-SIZE (plumbum-1.8.1.tar.gz) = 316432
+TIMESTAMP = 1685792336
+SHA256 (plumbum-1.8.2.tar.gz) = 9e6dc032f4af952665f32f3206567bc23b7858b1413611afe603a3f8ad9bfd75
+SIZE (plumbum-1.8.2.tar.gz) = 317675