fix frozen settings

Author: giancarloromeo

services/web/server/src/simcore_service_webserver/application_settings.py

@@ -22,6 +22,7 @@
 )
 from pydantic.fields import Field
 from pydantic.types import PositiveInt
+from pydantic_settings import SettingsConfigDict
 from settings_library.base import BaseCustomSettings
 from settings_library.email import SMTPSettings
 from settings_library.postgres import PostgresSettings
@@ -270,6 +271,10 @@ class ApplicationSettings(BaseCustomSettings, MixinLoggingSettings):
         "Currently this is a system plugin and cannot be disabled",
     )
 
+    model_config = SettingsConfigDict(
+        frozen=False
+    )
+
     @model_validator(mode="after")
     @classmethod
     def build_vcs_release_url_if_unset(cls, v):