Add gem benchmark to gemspec to support Ruby 4

Author: eiskrenkov

.github/workflows/ci.yml

@@ -18,12 +18,15 @@ jobs:
           - name: 'Minimum supported'
             ruby: '3.0'
             gemfile: "Gemfile.min-supported"
-          - name: 'Latest released & run rubocop'
+          - name: 'Latest Ruby 3'
             ruby: '3.4'
             gemfile: "Gemfile.latest-release"
+          - name: 'Latest released & run rubocop'
+            ruby: '4.0'
+            gemfile: "Gemfile.latest-release"
             rubocop: true
           - name: 'Rails edge'
-            ruby: '3.4'
+            ruby: '4.0'
             gemfile: "Gemfile.rails-edge"
             edge: true
 

Gemfile.lock

@@ -11,6 +11,7 @@ PATH
     identity_cache (1.6.4)
       activerecord (>= 7.0)
       ar_transaction_changes (~> 1.1)
+      benchmark
 
 GEM
   remote: https://rubygems.org/
@@ -99,6 +100,7 @@ GEM
 PLATFORMS
   arm64-darwin-22
   arm64-darwin-23
+  arm64-darwin-24
   x86_64-linux
 
 DEPENDENCIES

identity_cache.gemspec

@@ -36,6 +36,7 @@ Gem::Specification.new do |gem|
 
   gem.add_dependency("activerecord", ">= 7.0")
   gem.add_dependency("ar_transaction_changes", "~> 1.1")
+  gem.add_dependency("benchmark")
 
   gem.add_development_dependency("minitest", "~> 5.14")
   gem.add_development_dependency("mocha", "~> 2.0")