chore(deps): update dependency org.springframework.boot to v3.5.9 (#298)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gradle/libs.versions.toml

@@ -7,7 +7,7 @@ jacoco = "0.8.12"
 junit = "5.12.2"
 pmd = "7.11.0"
 spock = "2.4-M6-groovy-4.0"
-spring-boot-platform = "3.5.8"
+spring-boot-platform = "3.5.9"
 
 [libraries]
 errorprone-core = { module = "com.google.errorprone:error_prone_core", version = "2.36.0" }