Bump org.springframework.boot from 4.0.3 to 4.0.4

Bumps [org.springframework.boot](https://github.com/spring-projects/spring-boot) from 4.0.3 to 4.0.4.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v4.0.3...v4.0.4)

---
updated-dependencies:
- dependency-name: org.springframework.boot
  dependency-version: 4.0.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

build.gradle

@@ -2,7 +2,7 @@ import com.install4j.gradle.Install4jTask
 import org.gradle.internal.os.OperatingSystem
 
 plugins {
-    id("org.springframework.boot") version "4.0.3"
+    id("org.springframework.boot") version "4.0.4"
     id("io.spring.dependency-management") version "1.1.7"
     id("com.install4j.gradle") version "11.0.1"
     id("de.undercouch.download") version "5.7.0"