Update to Spring Boot 3.5.15-SNAPSHOT

Author: github-actions[bot]

gradle.properties

@@ -1,5 +1,5 @@
 version=1.2.18-SNAPSHOT
-version.samples=1.2.17
+version.samples=1.2.18-SNAPSHOT
 
 org.gradle.caching=true
 org.gradle.parallel=true

gradle/libs.versions.toml

@@ -22,8 +22,8 @@ junit = "5.12.2"
 hamcrest = "2.2"
 mockito = "5.16.1"
 spring-dep-mgmt = "1.1.7"
-spring-boot = "3.5.14-SNAPSHOT"
-spring-boot-for-docs = "3.5.14"
+spring-boot = "3.5.15-SNAPSHOT"
+spring-boot-for-docs = "3.5.15-SNAPSHOT"
 spring-cloud-stream = "4.2.0-SNAPSHOT"
 spring-retry = "2.0.12"
 system-lambda = "1.2.1"