Ruoyu Zhong 049e8cc61c
Update and temporarily disable GNU mirror audit
Update the audit to prefer ftpmirror.gnu.org over ftp.gnu.org as
suggested by GNU [1]:

> We recommend using this generic ftpmirror.gnu.org address wherever
> possible in links, documentation, etc., to reduce load on the main GNU
> server.

The audit is temporarily disabled to allow migrating all homebrew/core
formulae first.

Should help to address #20456.

[1]: https://www.gnu.org/server/mirror.en.html
2025-08-14 22:03:13 +08:00
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