Ruby

FreeBSD returns EAI_FAIL instead of EAI_FAMILY in getaddrinfo and getnameinfo specs

sync_default_gems.yml: Include the gem name in the job name

sync_default_gems.yml: Link the failed diff

sync_default_gems.yml: Notify which gem failed

sync_default_gems.yml: Notify an extra channel

which git.ruby-lang.org used to also notify.

sync_default_gems.yml: Fix the notification condition

compilers.yml: Run only specified tests for --with-gmp (#14798)

It's weird that --with-gmp runs test-tool just because it needs to run
test/ruby/test_bignum.rb and spec/ruby/core/integer/*_spec.rb.

test_commit_email.rb: Split out as binary for --with-gmp

https://github.com/ruby/ruby/actions/runs/18365998053/job/52318906076

test_commit_email.rb: Stop testing the un-encoded name

Hoping to work around failures on --with-gmp CI:
https://github.com/ruby/ruby/actions/runs/18365603616/job/52317792903

test_commit_email.rb: Test the encoding of commit messages