chore(deps): update dependency @opencode-ai/sdk to v1.2.20

Author: renovate[bot]

dev/package.json

@@ -12,7 +12,7 @@
     "@hey-api/codegen-core": "workspace:*",
     "@hey-api/openapi-python": "workspace:*",
     "@hey-api/openapi-ts": "workspace:*",
-    "@opencode-ai/sdk": "1.1.48",
+    "@opencode-ai/sdk": "1.2.20",
     "@pinia/colada": "0.19.1",
     "@tanstack/angular-query-experimental": "5.90.25",
     "@tanstack/preact-query": "5.93.0",