Bump org.springframework.boot:spring-boot-gradle-plugin

Bumps [org.springframework.boot:spring-boot-gradle-plugin](https://github.com/spring-projects/spring-boot) from 4.0.0-SNAPSHOT to 4.0.0-restructure-SNAPSHOT.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](https://github.com/spring-projects/spring-boot/commits)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-gradle-plugin
  dependency-version: 4.0.0-restructure-SNAPSHOT
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -3,7 +3,7 @@ jakarta-websocket = "2.1.1"
 org-apache-derby = "10.16.1.1"
 org-mockito = "5.16.1"
 org-mongodb = "5.5.1"
-org-springframework-boot = "4.0.0-SNAPSHOT"
+org-springframework-boot = "4.0.0-restructure-SNAPSHOT"
 
 [libraries]
 ch-qos-logback-logback-core = { module = "ch.qos.logback:logback-core", version = "1.5.18" }