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

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

cl/recap/api_serializers.py

@@ -150,7 +150,7 @@ def validate(self, attrs):
                     "document_number fields completed."
                 )
 
-            if not re.match('^[0-9]*$', attrs.get("document_number")):
+            if not re.match("^[0-9]*$", attrs.get("document_number")):
                 raise ValidationError(
                     "Uploaded PDFs document_number field can only contain "
                     "numbers."