chore: upgrade backend dependencies (#2641)

chore: upgrade backend dependencies (#2641)

server/common/utils/utils.py

@@ -8,7 +8,7 @@ import socket
 from urllib.parse import urlsplit, urljoin
 
 import numpy as np
-from flask import json
+import json
 
 from server.common.errors import ConfigurationError
 
@@ -100,6 +100,7 @@ def custom_format_warning(msg, *args, **kwargs):
 def jsonify_strict(data):
     return StrictJSONEncoder().encode(data)
 
+
 def import_plugins(plugin_module):
     """
     Load optional plugin modules from server.common.plugins