[ruby/readline] Bump up v0.0.4

https://github.com/ruby/readline/commit/7dbc5bd8d9
2023-12-16 13:48:30 +08:00 · 2023-12-16 13:48:30 +08:00 · 80d63fbea5
--- a/lib/readline.gemspec
+++ b/lib/readline.gemspec
@ -1,6 +1,6 @@
 Gem::Specification.new do |spec|
  spec.name          = 'readline'
-  spec.version       = '0.0.3'
+  spec.version       = '0.0.4'
  spec.authors       = ['aycabta']
  spec.email         = ['aycabta@gmail.com']