www/node20: Update to 20.8.0

Changes:	https://github.com/nodejs/node/blob/main/doc/changelogs/CHANGELOG_V20.md

www/node20/Makefile

 PORTNAME=	node
-PORTVERSION=	20.7.0
+PORTVERSION=	20.8.0
 DISTVERSIONPREFIX=	v
 CATEGORIES=	www
 MASTER_SITES=	https://nodejs.org/dist/v${PORTVERSION}/

www/node20/distinfo

-TIMESTAMP = 1695588792
-SHA256 (node-v20.7.0.tar.gz) = 07b85b65f844dc29ac5038c11b6e34a0997f1744d1487de0ab9a94743e5c12ad
-SIZE (node-v20.7.0.tar.gz) = 88100071
+TIMESTAMP = 1696001284
+SHA256 (node-v20.8.0.tar.gz) = daa1f39d262b8e07a06c272f2671337f1bfce54000db9662de0dfce3c18fff3c
+SIZE (node-v20.8.0.tar.gz) = 88145163