[ruby/date] Bump version to 3.0.1

https://github.com/ruby/date/commit/47cca1b76b

ext/date/date.gemspec

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 Gem::Specification.new do |s|
   s.name = "date"
-  s.version = '3.0.0'
+  s.version = '3.0.1'
   s.summary = "A subclass of Object includes Comparable module for handling dates."
   s.description = "A subclass of Object includes Comparable module for handling dates."