Merging v4.8.3 and v4.8.4 changes into main

ReleaseNotes.md

catalogue/dummy/DummyTapeCatalogue.cpp

catalogue/dummy/DummyTapeCatalogue.hpp

catalogue/interfaces/TapeCatalogue.hpp

catalogue/rdbms/RdbmsTapeCatalogue.cpp

catalogue/rdbms/RdbmsTapeCatalogue.hpp

catalogue/retrywrappers/TapeCatalogueRetryWrapper.cpp

catalogue/retrywrappers/TapeCatalogueRetryWrapper.hpp

cta.spec.in

objectstore/QueueCleanupRunner.cpp

objectstore/QueueCleanupRunner.hpp

objectstore/QueueCleanupRunnerConcurrentTest.cpp

scheduler/OStoreDB/OStoreDB.cpp

scheduler/OStoreDB/OStoreDB.hpp

scheduler/PostgresSchedDB/PostgresSchedDB.cpp

scheduler/PostgresSchedDB/PostgresSchedDB.hpp

scheduler/Scheduler.cpp

scheduler/SchedulerDatabase.hpp

scheduler/SchedulerDatabaseFactory.hpp