Bump org.springframework.boot:spring-boot-starter-actuator

Bumps [org.springframework.boot:spring-boot-starter-actuator](https://github.com/spring-projects/spring-boot) from 4.0.0-M3 to 4.0.4.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](https://github.com/spring-projects/spring-boot/compare/v4.0.0-M3...v4.0.4)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-starter-actuator
  dependency-version: 4.0.4
  dependency-type: direct:production
...

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

gradle/libs.versions.toml

@@ -3,7 +3,7 @@
 
 [versions]
 com-mysql-mysql-connector-j = "9.4.0"
-org-springframework-boot-spring-boot-starter-actuator = "4.0.0-M3"
+org-springframework-boot-spring-boot-starter-actuator = "4.0.4"
 org-springframework-boot-spring-boot-starter-data-jpa = "4.0.0-M3"
 org-springframework-boot-spring-boot-starter-test = "4.0.0-M3"
 org-springframework-boot-spring-boot-starter-websocket = "4.0.0-M3"