Use sage-dist-helpers for curl and gc

[embray]

This was originally done in #24025 but later excluded to prevent that ticket from conflicting with tickets that upgraded these packages. I don't believe there is any conflict now.

Depends on #23733

Component: build

Keywords: destdir curl gc

Author: Erik Bray

Branch/Commit: 1124391

Reviewer: Jeroen Demeyer

Issue created by migration from https://trac.sagemath.org/ticket/25038

[jdemeyer]

Reviewer: Jeroen Demeyer

[embray]

comment:3

algebra?

[embray]

Dependencies: #23733

[embray]

comment:5

(commented on wrong ticket)