Downgrade to ActiveRecord 6 to retain compatibility with Ruby 2.6

Author: amotl

activerecord-crate-adapter.gemspec

@@ -48,7 +48,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rspec", "~> 2.14"
 
-  spec.add_dependency('activerecord', '~> 7')
+  spec.add_dependency('activerecord', '~> 6')
   spec.add_dependency('arel', '>= 5.0.0')
   spec.add_dependency('crate_ruby', '~> 0.2.0')
 end

history.txt

@@ -2,7 +2,7 @@
 
 === unreleased
 
-  * Updated to ActiveRecord 7 and crate_ruby 0.2
+  * Updated to ActiveRecord 6 and crate_ruby 0.2
 
 === 0.0.4