Make gem smaller

Author: n-rodriguez

store_base_sti_class.gemspec

@@ -24,7 +24,7 @@ Gem::Specification.new do |s|
 
   s.required_ruby_version = '>= 3.1.0'
 
-  s.files = `git ls-files`.split("\n")
+  s.files = Dir['README.md', 'LICENSE', 'lib/**/*.rb']
 
   s.add_dependency('activerecord', ['>= 7.0', '< 8.0'])
 end