fix tox when installs requirements for celery

requirements.txt

-orchestrator-core[celery]==1.3.4
+orchestrator-core==1.3.4
 requests==2.31.0
 infoblox-client~=0.6.0
 pycountry==22.3.5
 pynetbox==7.2.0
 celery-redbeat==2.1.1
+celery==5.3.4
 
 # Test and linting dependencies
 pytest==7.4.3