[JAVA-28950] upgrade spring-credhub to spring-boot 3 (#16198)

Author: panos-kakos

spring-credhub/pom.xml

@@ -10,9 +10,9 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-boot-2</artifactId>
+        <artifactId>parent-boot-3</artifactId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../parent-boot-2</relativePath>
+        <relativePath>../parent-boot-3</relativePath>
     </parent>
 
     <dependencies>
@@ -37,8 +37,7 @@
     </dependencies>
 
     <properties>
-        <spring-credhub-starter.version>2.2.0</spring-credhub-starter.version>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <spring-credhub-starter.version>3.1.0</spring-credhub-starter.version>
     </properties>
 
 </project>