Upgrade and clean up dependencies

Upgrade and clean up dependencies

- Upgrade Hibernate
- Upgrade Mockito
- Upgrade Mockserver
- Remove Powermock (no longer supported) and replace with spring-test ReflectionTestUtils
- Upgrade Spring Framework
- Add spring-security to allow authentication on unit tests using MockMVC

Minor clean-up
- Replace deprecated authorization configuraiton on spring boot applications with SecurityFilterChain bean
- Change @LocalPort include on tests to use test include rather than runtime include
- Remove unused imports
- Remove unused constants and variables
- Add deprecation annotations where required

Issue-ID: POLICY-4482
Change-Id: Ifcabd73e4130810ba2a99b842ffa4203836c0682
Signed-off-by: liamfallon <liam.fallon@est.tech>