[3.13] Replace `capi-sig` mailing list with `discuss.python.org` (GH-136211)#136214

sobolevn merged 1 commit intopython:3.13python/cpython:3.13from

miss-islington:backport-7afe1ad-3.13miss-islington/cpython:backport-7afe1ad-3.13Copy head branch name to clipboard