Bump org.springframework.boot from 3.5.6 to 3.5.7

Bumps [org.springframework.boot](https://github.com/spring-projects/spring-boot) from 3.5.6 to 3.5.7.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.5.6...v3.5.7)

---
updated-dependencies:
- dependency-name: org.springframework.boot
  dependency-version: 3.5.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

build.gradle.kts

@@ -5,7 +5,7 @@ version = "3.5.3"
 
 plugins {
     val kotlinVersion = "2.2.21"
-    id("org.springframework.boot") version "3.5.6"
+    id("org.springframework.boot") version "3.5.7"
     id("io.spring.dependency-management") version "1.1.7"
     id("com.google.cloud.tools.jib") version "3.4.5"
     kotlin("jvm") version kotlinVersion