Add compatibility for Rails 8.1 and 8.2

Author: kemenaran

Gemfile.lock

@@ -2,7 +2,7 @@ PATH
   remote: .
   specs:
     siret_validator (0.1.0)
-      activemodel (>= 7.0, < 8.1)
+      activemodel (>= 7.0, < 9.0)
 
 GEM
   remote: https://rubygems.org/

siret_validator.gemspec

@@ -30,7 +30,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   # Uncomment to register a new dependency of your gem
-  spec.add_dependency "activemodel", ">= 7.0", "< 8.1"
+  spec.add_dependency "activemodel", ">= 7.0", "< 9.0"
 
   # For more information and examples about making a new gem, check out our
   # guide at: https://bundler.io/guides/creating_gem.html