Upgrade to Spring Session 2.6.4-SNAPSHOT.

Author: jxblum

gradle.properties

@@ -8,6 +8,6 @@ springDataBomVersion=2021.1.4
 springDataCommonsVersion=2.6.4
 springDataGeodeVersion=2.6.4
 springDataGeodeTestVersion=0.2.2-Q
-springSessionVersion=2.6.3-SNAPSHOT
+springSessionVersion=2.6.4-SNAPSHOT
 springSessionBomVersion=2021.1.2
 version=2.6.2-SNAPSHOT