www/node20: Update to 20.15.1

Changes: https://github.com/nodejs/node/releases

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

Security: CVE-2024-22018, CVE-2024-22020, CVE-2024-36137, CVE-2024-36138, CVE-2024-37372
(cherry picked from commit 1ea59471d131507fedd09640ac294ef3ac37281b)