Bump to 3.1.2.5

[hasufell]

Same as #514

@kazu-yamamoto the configure script is not part of this repo, so I generated the tarball and uploaded it here:

• https://downloads.haskell.org/~ghcup/tmp/network-3.1.2.5.tar.gz
• PGP signature https://downloads.haskell.org/~ghcup/tmp/network-3.1.2.5.tar.gz.sig (my key is 7784930957807690A66EBDBE3786C5262ECB4A3F)

[kazu-yamamoto]

In configure in tar.gz says: "# Generated by GNU Autoconf 2.69 for Haskell network package 3.1.2.3."

This is confusing. This should be "3.1.2.5". So, would you update the version in configure.ac and regenerate configure and re-create tar.gz?

[hasufell]

@kazu-yamamoto done: https://downloads.haskell.org/ghcup/tmp/network/

[Mikolaj]

LGTM

[kazu-yamamoto]

Now LGTM.

[kazu-yamamoto]

I have released v3.1.2.5. I hope that this fixes everything.
Thank you all for your contributions!

[Mikolaj]

We'll let you know as soon as our CI picks up the new network package and runs with it. :)

[Mikolaj]

Success! Our CI (e.g., https://github.com/haskell/cabal/runs/3838166584) and other tests show no breakage any more for cabal, (3.4 as well as current version). That will give users time to switch to cabal 3.6.2 (almost released now) before other packages start using the broken new autoconf.

@kazu-yamamoto, @Mistuke: thank you again.

[hasufell]

Here's my CI PR to remove the workaround that allowed this bug to sneak through: #516