Bump spring-boot.version from 3.5.4 to 4.0.0

Bumps `spring-boot.version` from 3.5.4 to 4.0.0.

Updates `org.springframework.boot:spring-boot-maven-plugin` from 3.5.4 to 4.0.0
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.5.4...v4.0.0)

Updates `org.springframework.boot:spring-boot-dependencies` from 3.5.4 to 4.0.0
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.5.4...v4.0.0)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-maven-plugin
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: org.springframework.boot:spring-boot-dependencies
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

pom.xml

@@ -67,7 +67,7 @@
     <site-maven-plugin.version>3.21.0</site-maven-plugin.version>
     <source-maven-plugin.version>3.3.0</source-maven-plugin.version>
     <spotbug-maven-plugin.version>4.9.4.0</spotbug-maven-plugin.version>
-    <spring-boot.version>3.5.4</spring-boot.version>
+    <spring-boot.version>4.0.0</spring-boot.version>
     <surefire-maven-plugin.version>3.5.4</surefire-maven-plugin.version>
     <!-- plugin version end -->
   </properties>