Update MCP Spec Version

MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).

• Third-party content exposure detected (high risk: 0.90). The skill's Step 1 explicitly instructs the agent to fetch and read external specification documents from the public URL https://modelcontextprotocol.io/llms.txt and the linked changelogs/schemas on the open web, and to base code changes and behavior on that content, which clearly exposes it to untrusted third-party content that can influence actions.

MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).

• Potentially malicious external URL detected (high risk: 1.00). The skill instructs the agent to fetch and read https://modelcontextprotocol.io/llms.txt at runtime (and then follow linked schemas/specs) which directly controls the agent's update instructions and is required for the task, so this external URL is a runtime dependency that can control prompts.