[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

backend/models/dtos/project_partner_dto.py

@@ -6,8 +6,7 @@
 
 def is_known_action(value):
     """Validates that the action performed on a Project-Partner link is known"""
-    valid_values = \
-        f"{ProjectPartnerAction.CREATE.name}, {ProjectPartnerAction.DELETE.name}, {ProjectPartnerAction.UPDATE.name}"
+    valid_values = f"{ProjectPartnerAction.CREATE.name}, {ProjectPartnerAction.DELETE.name}, {ProjectPartnerAction.UPDATE.name}"
 
     try:
         action = ProjectPartnerAction[value.upper()]