Merge branch 'bump-drf-spectacular' into 'master'

Bump Python requirement drf-spectacular to 0.17.3

See merge request !1413

requirements.txt

@@ -9,7 +9,7 @@ django-enumfields==2.1.1
 django-redis==5.0.0
 django-rq==2.4.1
 djangorestframework==3.12.4
-drf-spectacular==0.17.2
+drf-spectacular==0.17.3
 elasticsearch-dsl>=6.0.0,<7.0.0
 gitpython==3.1.18
 python-gitlab==2.10.0