chore(deps): 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]

gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 kotlin = "2.3.0-dev-9673"
-spring-boot = "3.5.6"
+spring-boot = "3.5.7"
 spring-dependency-managment = "1.1.7"
 springdoc = "2.8.13"
 aws-serverless-java-container-springboot3 = "2.1.5"