Bump kombu from 4.6.11 to 5.0.0 (#1754)

Bumps [kombu](https://kombu.readthedocs.io) from 4.6.11 to 5.0.0.

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

http_service/requirements.txt

@@ -5,7 +5,7 @@ Flask==1.1.2
 flask-apispec==0.9.0
 flask-cors==3.0.8
 gunicorn==20.0.4
-kombu==4.6.11
+kombu==5.0.0
 marshmallow==3.7.1
 requests==2.24.0
 rq==1.5.0