build: update springboot and app version

Author: Echallier Nicolas

pom.xml

@@ -6,12 +6,12 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.5.3</version>
+        <version>3.5.6</version>
         <relativePath/> <!-- lookup parent from repository -->
     </parent>
     <groupId>fr.insee.rmes</groupId>
     <artifactId>ddi-access-services</artifactId>
-    <version>2.1.5</version>
+    <version>2.1.6-rc3</version>
     <name>DDI Access Services</name>
     <description>Rest API to access to Colectica repository services</description>
     <properties>