project: pin drf-yasg dependency

Signed-off-by: Marin Hannache mareo@cri.epita.fr

Pipfile

@@ -24,6 +24,7 @@ Django = {extras = ["argon2"],version = "*"}
 django-phonenumber-field = "*"
 django-rest-serializer-field-permissions = "*"
 drf-yasg = {extras = ["validation"],version = "*"}
+jsonschema = {version = "<=3.2.0"} # jsonchema.compat is required for drf-yasg
 ipython = "*"
 swagger-spec-validator = "*"
 django-crispy-forms = "*"