gem: relax required activesupport version to accept latest one (#161)

activerecord gem has v8.1.2 as latest.

https://rubygems.org/gems/activesupport/versions/8.1.2

Signed-off-by: Shizuo Fujita <[email protected]>

Author: Watson1978

fluent-plugin-sql.gemspec

@@ -18,7 +18,7 @@ Gem::Specification.new do |gem|
 
   gem.add_dependency "fluentd", [">= 1.7.0", "< 2"]
   gem.add_dependency "ostruct", '~> 0.6'
-  gem.add_dependency 'activerecord', [">= 6.1", "< 7.2"]
+  gem.add_dependency 'activerecord', [">= 6.1", "< 8.2"]
   gem.add_dependency 'activerecord-import', "~> 1.0"
   gem.add_development_dependency "rake", ">= 0.9.2"
   gem.add_development_dependency "test-unit", "> 3.1.0"