chore(deps): update mcp registry dependency to v1.2.3

[renovate]

🔄 MCP Registry Dependency Update

This PR updates the MCP registry dependency and automatically syncs the schema reference.

Changes

• Dependency: github.com/modelcontextprotocol/registry →
• Schema: Automatically synced schema reference commit SHA to match the updated dependency

✅ Automated Tasks Completed

• ✅ Go Modules: Updated and tidied
• ✅ Schema Sync: Schema reference updated to match dependency version

🚀 Next Steps

This PR will be validated by the CI workflow:

• Registry Validation: All registry entries will be validated against the new schema
• Registry Build: Both ToolHive and Official MCP formats will be built and tested
• Tool Updates: Any affected registry spec files will be automatically updated

If validation passes, this PR can be merged immediately. If validation fails, the PR will be converted to draft status with detailed error information.

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🤖 This PR was created automatically by Renovate with enhanced MCP registry support.

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• If you want to rebase/retry this PR, check this box

[renovate]

⚠️ Artifact update problem

Renovate failed to update artifacts related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: go.sum

Command failed: go get -t ./...
go: module github.com/modelcontextprotocol/[email protected] requires go >= 1.25; switching to go1.25.1
go: downloading go1.25.1 (linux/amd64)
go: download go1.25.1: golang.org/[email protected]: verifying module: checksum database disabled by GOSUMDB=off

File name: go.mod

Post-upgrade command 'chmod +x scripts/sync-schema-version.sh' has not been added to the allowed list in allowedCommands

File name: go.mod

Post-upgrade command './scripts/sync-schema-version.sh' has not been added to the allowed list in allowedCommands