Upgrade to Spring Boot 2.7.4.

Author: jxblum

gradle.properties

@@ -8,7 +8,7 @@ mockitoVersion=4.5.1
 multithreadedtcVersion=1.01
 pivotalGemFireVersion=9.10.16
 springVersion=5.3.23
-springBootVersion=2.7.0-RC1
+springBootVersion=2.7.4
 springDataBomVersion=2021.2.0
 springDataGeodeVersion=2.7.0
 springShellVersion=1.2.0.RELEASE

pom.xml

@@ -89,7 +89,7 @@
 		<multithreadedtc.version>1.01</multithreadedtc.version>
 		<pivotal-gemfire.version>9.10.16</pivotal-gemfire.version>
 		<spring.version>5.3.23</spring.version>
-		<spring-boot.version>2.7.0-RC1</spring-boot.version>
+		<spring-boot.version>2.7.4</spring-boot.version>
 		<spring-data-bom.version>2021.2.0</spring-data-bom.version>
 		<spring-shell.version>1.2.0.RELEASE</spring-shell.version>
 	</properties>