Uplift spring boot version to 3.1.2

Spring boot version upgrade to 3.1.2.

Issue-ID: NONRTRIC-900
Signed-off-by: aravind.est <aravindhan.a@est.tech>
Change-Id: Ib53e3e6b622042dad33c7139580022b6443d9d2a
diff --git a/pom.xml b/pom.xml
index d1f051e..f52156e 100755
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.0.6</version>
+        <version>3.1.2</version>
     </parent>
     <groupId>com.oransc</groupId>
     <artifactId>rappmanager</artifactId>