Add review nit

Author: ZohebShaikh

docs/reference/openapi.yaml

@@ -93,11 +93,9 @@ components:
           title: Client Id
           type: string
         logout_redirect_endpoint:
-          anyOf:
-          - type: string
-          - type: 'null'
           description: The oidc endpoint required to logout
           title: Logout Redirect Endpoint
+          type: string
         well_known_url:
           description: URL to fetch OIDC config from the provider
           title: Well Known Url

src/blueapi/config.py

@@ -21,6 +21,7 @@
     ValidationError,
     field_validator,
 )
+from pydantic.json_schema import SkipJsonSchema
 
 from blueapi.utils import BlueapiBaseModel, InvalidConfigError
 
@@ -162,7 +163,7 @@ class OIDCConfig(BlueapiBaseModel):
     )
     client_id: str = Field(description="Client ID")
     client_audience: str = Field(description="Client Audience(s)", default="blueapi")
-    logout_redirect_endpoint: str | None = Field(
+    logout_redirect_endpoint: str | SkipJsonSchema[None] = Field(
         description="The oidc endpoint required to logout", default=None
     )