Bump spring-boot.version from 4.0.2 to 4.0.3 (#40)

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

Updates `org.springframework.boot:spring-boot-dependencies` 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-configuration-processor` 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-dependencies
  dependency-version: 4.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.springframework.boot:spring-boot-configuration-processor
  dependency-version: 4.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pom.xml

@@ -47,7 +47,7 @@
 
         <maven.compiler.release>${java.version}</maven.compiler.release>
         <spotless.version>3.2.1</spotless.version>
-        <spring-boot.version>4.0.2</spring-boot.version>
+        <spring-boot.version>4.0.3</spring-boot.version>
     </properties>
 
     <dependencyManagement>