Upgrade Spring Geode Samples to Spring Boot 2.6.13.

Author: jxblum

spring-geode-samples/pom.xml

@@ -8,7 +8,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.13-SNAPSHOT</version>
+		<version>2.6.13</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>