Update Spring Boot from 3.4.4 to 3.4.5 (Security Patch)

Spring Boot 3.4.5 has been released and includes important security and bug fixes. To ensure our application is up to date and secure, we need to upgrade the framework from 3.4.4 to 3.4.5.

Tasks:

• Review the release notes: https://github.com/spring-projects/spring-boot/releases
• Update the version in pom.xml
• Build the application and perform tests

Notes:
No breaking changes are expected between 3.4.4 and 3.4.5.

Acceptance Criteria:

• Application starts without errors using Spring Boot 3.4.5
• All relevant tests pass