fix[backend](healthcheck): removed springboot healthcheck to allow custom opensearch client to be used

Author: AlexSanchez-bit

backend/src/main/resources/config/application.yml

@@ -16,6 +16,8 @@ management:
     git:
       mode: full
   health:
+    elasticsearch:
+      enabled: false
     group:
       liveness:
         include: livenessState