ruby: update to 4.0.2

ruby: update to 4.0.2

ruby 4.0.2 is a routine update that includes a bugfix in YJIT for
NoMethodError on Puma, along with other bugfixes.

ruby 4.0.1 includes a bugfix for spurious wakeup from Kernel#sleep when
subprocess exits in another thread, along with other bugfixes.

Link: https://www.ruby-lang.org/en/news/2026/03/16/ruby-4-0-2-released/
Changelog: https://github.com/ruby/ruby/releases/tag/v4.0.2
Link: https://www.ruby-lang.org/en/news/2026/01/13/ruby-4-0-1-released/
Changelog: https://github.com/ruby/ruby/releases/tag/v4.0.1
Signed-off-by: Luiz Angelo Daros de Luca <redacted>