Add Rake gem for newer Ruby versions

ur5us · ur5us · commit 1643fb229bc8 · 2025-05-11T13:05:59.000+12:00
diff --git a/public_activity.gemspec b/public_activity.gemspec
@@ -55,4 +55,6 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'sqlite3', '~> 1.4'
   s.add_development_dependency 'test-unit'
   s.add_development_dependency 'yard'
+  s.add_development_dependency 'rake'
 end
+
