CME-23 upgrade to Spring Boot 3 (#565)

* CME-23 upgrade to Spring Boot 3

* Bump PMD and address issues

* remove CVE suppressions

README.md

@@ -17,7 +17,6 @@ The api is a working application with a setup. It contains:
  * swagger configuration for api documentation ([see how to publish your api documentation to shared repository](https://github.com/hmcts/reform-api-docs#publish-swagger-docs))
  * code quality tools already set up
  * integration with Travis CI
- * Hystrix circuit breaker enabled
  * MIT license and contribution information
  * Helm chart using chart-java.
 
@@ -208,29 +207,6 @@ docker image rm <image-id>
 
 There is no need to remove postgres and java or similar core images.
 
-## Hystrix
-
-[Hystrix](https://github.com/Netflix/Hystrix/wiki) is a library that helps you control the interactions
-between your application and other services by adding latency tolerance and fault tolerance logic. It does this
-by isolating points of access between the services, stopping cascading failures across them,
-and providing fallback options. We recommend you to use Hystrix in your application if it calls any services.
-
-### Hystrix circuit breaker
-
-This template API has [Hystrix Circuit Breaker](https://github.com/Netflix/Hystrix/wiki/How-it-Works#circuit-breaker)
-already enabled. It monitors and manages all the`@HystrixCommand` or `HystrixObservableCommand` annotated methods
-inside `@Component` or `@Service` annotated classes.
-
-### Other
-
-Hystrix offers much more than Circuit Breaker pattern implementation or command monitoring.
-Here are some other functionalities it provides:
- * [Separate, per-dependency thread pools](https://github.com/Netflix/Hystrix/wiki/How-it-Works#isolation)
- * [Semaphores](https://github.com/Netflix/Hystrix/wiki/How-it-Works#semaphores), which you can use to limit
- the number of concurrent calls to any given dependency
- * [Request caching](https://github.com/Netflix/Hystrix/wiki/How-it-Works#request-caching), allowing
- different code paths to execute Hystrix Commands without worrying about duplicating work
-
 ## License
 
 This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details

bin/init.sh

@@ -47,7 +47,7 @@ perl -i -pe "s/reform.demo/reform.$package/g" build.gradle
 git mv src/integrationTest/java/uk/gov/hmcts/reform/demo/ src/integrationTest/java/uk/gov/hmcts/reform/${package}
 git mv src/main/java/uk/gov/hmcts/reform/demo/ src/main/java/uk/gov/hmcts/reform/${package}
 
-declare -a headers_to_delete=("Purpose" "What's inside" "Plugins" "Setup" "Hystrix")
+declare -a headers_to_delete=("Purpose" "What's inside" "Plugins" "Setup")
 
 # Clean-up README file
 for i in "${headers_to_delete[@]}"