Upgrade to Grace Async 6.1.0-M2

Closes gh-8

Author: rainboyan

gradle.properties

@@ -7,7 +7,7 @@ developers=Michael Yan
 caffeineVersion=3.1.8
 commonsValidatorVersion=1.9.0
 elVersion=4.0.0
-graceAsyncVersion=6.1.0-M1
+graceAsyncVersion=6.1.0-M2
 graceVersion=2023.1.0-M1
 groovyVersion=4.0.23
 h2Version=2.1.214