langchain-instanode 0.2.0

Trim release aligning with the 0.3.0 Python SDK.

Breaking:

• Drops ProvisionMongoTool — the backend /nosql endpoint is not live yet.
• name is now a required argument on provision_postgres and provision_webhook, matching the SDK 0.3.0 contract.

Fixes:

• ListResourcesTool now uses r.resource_type / r.token (the shape of the Resource type in SDK 0.3.0) instead of a non-existent r.service.

Requires instanode>=0.3.0.