Bump spring.boot.version from 2.7.3 to 3.0.4

Bumps `spring.boot.version` from 2.7.3 to 3.0.4.

Updates `spring-boot-maven-plugin` from 2.7.3 to 3.0.4
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.7.3...v3.0.4)

Updates `spring-boot-dependencies` from 2.7.3 to 3.0.4
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.7.3...v3.0.4)

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

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

pom.xml

@@ -33,7 +33,7 @@
 
  <!-- Override spring-boot version from solace-spring-boot to latest patch version -->
  <!-- Remove this if the next version of solace-spring-boot works fine -->
- <spring.boot.version>2.7.3</spring.boot.version>
+ <spring.boot.version>3.0.4</spring.boot.version>
 
  <solace.spring.cloud.connector.version>4.3.10-SNAPSHOT</solace.spring.cloud.connector.version>
  <solace.spring.cloud.stream-starter.version>3.4.1-SNAPSHOT</solace.spring.cloud.stream-starter.version>