global: bump invenio-celery version

* removes the kombu pinned version

setup.py

@@ -72,15 +72,12 @@
     'counter-robots>=2018.6',
     'Flask>=0.11.1',
     'invenio-cache>=1.0.0',
-    'invenio-celery>=1.1.1',
+    'invenio-celery>=1.1.3',
     'invenio-queues>=1.0.0a2',
     'maxminddb-geolite2>=2017.0404',
     'python-dateutil>=2.6.1',
     'python-geoip>=1.2',
-    # pin max version of `kombu` because `invenio-celery`==1.1.1
-    # requires `celery`<4.3 -> `kombu`<4.4
-    # while `invenio-queues` requires `kombu`<5
-    'kombu>=4.2.0,<4.4',
+    'Werkzeug>=0.15.0,<1.0.0'
 ]
 
 packages = find_packages()