Update Ruby dependencies

[a-akimov]

Motivation and Context

Update versions for Ruby server and client.

How Has This Been Tested?

Locally

Breaking Changes

N/a

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Documentation
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have added or updated documentation as needed

Additional context

N/a

[Copilot]

Copilot review overview

🟢 Approval recommended

No unresolved review issues were identified.

Review effort: Lite
Findings: None

What changed in this PR

Updates minimum Ruby dependency versions for the weather server and MCP client.

Changes:

• Raises mcp minimum version to 1.6.0.
• Raises anthropic minimum version to 1.72.0.

File	Description
weather-server-ruby/​Gemfile	Updates the MCP dependency requirement.
mcp-client-ruby/​Gemfile	Updates Anthropic and MCP dependency requirements.

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