Upgrade dependencies.

Upgrade to Mockito 3.0.0.

Upgrade to Pivotal GemFire 9.5.4.

Set Spring Framework version to 5.1.8.RELEASE.

Set Spring Boot version to 2.1.6.RELEASE.

Set Spring Data for Apache Geode & Pivotal GemFire version to 2.1.9.RELEASE.

Set Spring Data Release Train version to Lovelace-SR9.

Set Spring Session BOM version to Bean-SR6.

Set Spring Session for Apache Geode & Pivotal GemFire 2.1.4.RELEASE.

gradle.properties

@@ -1,17 +1,17 @@
 antlrVersion=2.7.7
 apacheGeodeVersion=1.6.0
 byteBuddyVersion=1.9.10
-mockitoVersion=2.28.2
+mockitoVersion=3.0.0
 multithreadedtcVersion=1.01
-pivotalGemFireVersion=9.5.3
-springVersion=5.1.9.BUILD-SNAPSHOT
-springBootVersion=2.1.7.BUILD-SNAPSHOT
-springDataGemFireVersion=2.1.10.BUILD-SNAPSHOT
-springDataGeodeVersion=2.1.10.BUILD-SNAPSHOT
+pivotalGemFireVersion=9.5.4
+springVersion=5.1.8.RELEASE
+springBootVersion=2.1.6.RELEASE
+springDataGemFireVersion=2.1.9.RELEASE
+springDataGeodeVersion=2.1.9.RELEASE
 springDataGeodeTestVersion=0.0.5.RELEASE
-springDataReleaseTrainVersion=Lovelace-BUILD-SNAPSHOT
-springSessionBomVersion=Bean-BUILD-SNAPSHOT
-springSessionDataGeodeVersion=2.1.5.BUILD-SNAPSHOT
+springDataReleaseTrainVersion=Lovelace-SR9
+springSessionBomVersion=Bean-SR6
+springSessionDataGeodeVersion=2.1.4.RELEASE
 springShellVersion=1.2.0.RELEASE
 testcontainersVersion=1.10.6
 version=1.1.0.BUILD-SNAPSHOT