fix(deps): update dependency org.springframework.boot:spring-boot-starter-parent to v3.5.6

Author: renovate[bot]

pom.xml

@@ -26,7 +26,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.5.4</version>
+    <version>3.5.6</version>
     <relativePath />
   </parent>