Update dependency org.springframework.boot:spring-boot-starter-parent to v3.5.6

Author: renovate[bot]

archival-service/pom.xml

@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.1.4</version>
+		<version>3.5.6</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.sivalabs</groupId>

messages-service/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.1.4</version>
+        <version>3.5.6</version>
         <relativePath/> <!-- lookup parent from repository -->
     </parent>
     <groupId>com.sivalabs</groupId>

messages-webapp/pom.xml

@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.1.4</version>
+        <version>3.5.6</version>
         <relativePath/> <!-- lookup parent from repository -->
     </parent>
     <groupId>com.sivalabs</groupId>