Bump org.springframework.boot from 3.5.6 to 3.5.7 (#507)

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]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

build.gradle

@@ -2,7 +2,7 @@ import io.freefair.gradle.plugins.okhttp.tasks.UploadFile
 import org.springframework.boot.gradle.plugin.SpringBootPlugin
 
 plugins {
-    id "org.springframework.boot" version "3.5.6" apply false
+    id "org.springframework.boot" version "3.5.7" apply false
     id "io.freefair.git-version"
     id "io.freefair.okhttp"
     id "io.freefair.maven-central.validate-poms" apply false