Bump spring.version from 5.3.29 to 6.2.3

Bumps `spring.version` from 5.3.29 to 6.2.3.

Updates `org.springframework:spring-test` from 5.3.29 to 6.2.3
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v5.3.29...v6.2.3)

Updates `org.springframework:spring-webmvc` from 5.3.29 to 6.2.3
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v5.3.29...v6.2.3)

---
updated-dependencies:
- dependency-name: org.springframework:spring-test
  dependency-type: direct:development
  update-type: version-update:semver-major
- dependency-name: org.springframework:spring-webmvc
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -37,7 +37,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <spring.version>5.3.29</spring.version>
+        <spring.version>6.2.3</spring.version>
         <slf4j.version>1.7.33</slf4j.version>
         <jsf.version>2.2.20</jsf.version>
         <hibernate.version>5.6.15.Final</hibernate.version>