Update OpenAPI to version generated from ref 5526ead (#821)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

api/openapi.json

@@ -1445,9 +1445,9 @@
       },
       "MuxRule": {
         "properties": {
-          "provider": {
+          "provider_id": {
             "type": "string",
-            "title": "Provider"
+            "title": "Provider Id"
           },
           "model": {
             "type": "string",
@@ -1470,10 +1470,9 @@
         },
         "type": "object",
         "required": [
-          "provider",
+          "provider_id",
           "model",
-          "matcher_type",
-          "matcher"
+          "matcher_type"
         ],
         "title": "MuxRule",
         "description": "Represents a mux rule for a provider."