sshuttle: use archive URL

Closes #18705.
aria2 1.16.4

Closes #18696.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
aria2 1.16.5
graphicsmagick 1.3.18

Closes #18700.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
gobject-introspection: look for .girs under HOMEBREW_PREFIX

Fixes #18703.