chore: update OpenAPI spec from monorepo (#1281)

Co-authored-by: OpenRouter SDK Bot <sdk-bot@openrouter.ai>

Author: openrouter-docs-sync[bot]

.speakeasy/in.openapi.yaml

@@ -16522,10 +16522,12 @@ components:
           enum:
             - '1:1'
             - '1:2'
+            - '1:3'
             - '1:4'
             - '1:8'
             - '2:1'
             - '2:3'
+            - '3:1'
             - '2.35:1'
             - '3:2'
             - '3:4'