test: specify version for sqlite3

Author: irphilli

activerecord-batch_touching.gemspec

@@ -29,7 +29,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "rubocop-rspec"
   spec.add_development_dependency "simplecov"
   spec.add_development_dependency "simplecov-rcov"
-  spec.add_development_dependency "sqlite3"
+  spec.add_development_dependency "sqlite3", "~> 1.4"
   spec.add_development_dependency "timecop"
 
   spec.metadata["rubygems_mfa_required"] = "true"