chore: update OpenAPI spec from monorepo (#441)

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

Author: openrouter-docs-sync[bot]

.speakeasy/in.openapi.yaml

@@ -31456,8 +31456,7 @@ paths:
           schema:
             description: Minimum context length (tokens). Models with smaller context are excluded.
             example: 128000
-            exclusiveMinimum: true
-            minimum: 0
+            minimum: 1
             type: integer
         - description: Minimum prompt price in $/M tokens.
           in: query