Bump patch version.

ioquatix · ioquatix · commit 22f2f6ae6379 · 2023-08-25T23:53:29.000+12:00
diff --git a/lib/async/version.rb b/lib/async/version.rb
@@ -4,5 +4,5 @@
 # Copyright, 2017-2023, by Samuel Williams.
 
 module Async
-	VERSION = "2.6.3"
+	VERSION = "2.6.4"
 end
