Fix async version

Author: petergebala

Rakefile

@@ -50,7 +50,7 @@ end.spec 'neo4j-ruby-driver' do
     spec_extras[:requirements] = ->(requirements) { requirements << 'jar org.neo4j.driver, neo4j-java-driver-all, 5.28.4' }
     spec_extras[:platform] = 'java'
   else
-    dependency 'async', '>= 2.13'
+    dependency 'async', ['>= 2.13', '< 2.24']
     dependency 'async-io', '>= 0'
     dependency 'connection_pool', '>= 0'