Upgrade to Spring Framework 6.0.0-M4.

Author: jxblum

gradle.properties

@@ -8,7 +8,7 @@ findbugsVersion=3.0.2
 multithreadedtcVersion=1.01
 pivotalCloudCacheVersion=1.14.4
 pivotalGemFireVersion=9.10.15
-springVersion=6.0.0-SNAPSHOT
+springVersion=6.0.0-M4
 springBootVersion=3.0.0-SNAPSHOT
 springCloudBindingsVersion=1.8.1
 springDataBomVersion=2022.0.0-SNAPSHOT