[deps] Bumped celery~=5.4.0

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Federico Capoano <f.capoano@openwisp.io>
Co-authored-by: Gagan Deep <pandafy.dev@gmail.com>

Author: 3 people

setup.py

@@ -62,7 +62,7 @@
             'django-filter~=23.2',  # django-filter uses CalVer
             'drf-yasg~=1.21.7',
         ],
-        'celery': ['celery~=5.3.0'],
+        'celery': ['celery~=5.4.0'],
         'selenium': ['selenium>=4.10,<4.24'],
     },
     classifiers=[