fix: improve create_card dataset_query schema for MCP compatibility#15

Kai-Oesterling wants to merge 1 commit intoCognitionAI:mainCognitionAI/metabase-mcp-server:mainfrom

Kai-Oesterling:fix/create-card-dataset-query-schemaKai-Oesterling/metabase-mcp-server:fix/create-card-dataset-query-schemaCopy head branch name to clipboard