Upgrade to Spring Framework 5.3.23.

Author: jxblum

gradle.properties

@@ -7,7 +7,7 @@ lombokVersion=1.18.24
 mockitoVersion=4.5.1
 multithreadedtcVersion=1.01
 pivotalGemFireVersion=9.10.16
-springVersion=5.3.20
+springVersion=5.3.23
 springBootVersion=2.7.0-RC1
 springDataBomVersion=2021.2.0
 springDataGeodeVersion=2.7.0

pom.xml

@@ -88,7 +88,7 @@
 		<mockito.version>4.5.1</mockito.version>
 		<multithreadedtc.version>1.01</multithreadedtc.version>
 		<pivotal-gemfire.version>9.10.16</pivotal-gemfire.version>
-		<spring.version>5.3.20</spring.version>
+		<spring.version>5.3.23</spring.version>
 		<spring-boot.version>2.7.0-RC1</spring-boot.version>
 		<spring-data-bom.version>2021.2.0</spring-data-bom.version>
 		<spring-shell.version>1.2.0.RELEASE</spring-shell.version>