Bump org.springframework.boot from 4.0.2 to 4.0.3

Bumps [org.springframework.boot](https://github.com/spring-projects/spring-boot) from 4.0.2 to 4.0.3.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v4.0.2...v4.0.3)

---
updated-dependencies:
- dependency-name: org.springframework.boot
  dependency-version: 4.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-org-springframework-boot = "4.0.2"
+org-springframework-boot = "4.0.3"
 
 [libraries]
 org-springframework-spring-framework-bom = "org.springframework:spring-framework-bom:7.0.5"