Bump spring-boot.version from 4.0.2 to 4.0.3

Bumps `spring-boot.version` from 4.0.2 to 4.0.3.

Updates `org.springframework.boot:spring-boot-starter-parent` 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)

Updates `org.springframework.boot:spring-boot-maven-plugin` 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:spring-boot-starter-parent
  dependency-version: 4.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.springframework.boot:spring-boot-maven-plugin
  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]

pom.xml

@@ -124,7 +124,7 @@
     <!-- Run Docker build by default -->
     <skipDocker>false</skipDocker>
     <sortpom-maven-plugin.version>4.0.0</sortpom-maven-plugin.version>
-    <spring-boot.version>4.0.2</spring-boot.version>
+    <spring-boot.version>4.0.3</spring-boot.version>
     <testcontainers.version>2.0.2</testcontainers.version>
     <testng.version>7.12.0</testng.version>
     <xmlunit-assertj3.version>2.11.0</xmlunit-assertj3.version>