Bump mcp from 0.9.0 to 0.9.2

Bumps [mcp](https://github.com/modelcontextprotocol/ruby-sdk) from 0.9.0 to 0.9.2.
- [Release notes](https://github.com/modelcontextprotocol/ruby-sdk/releases)
- [Changelog](https://github.com/modelcontextprotocol/ruby-sdk/blob/main/CHANGELOG.md)
- [Commits](modelcontextprotocol/ruby-sdk@v0.9.0...v0.9.2)

---
updated-dependencies:
- dependency-name: mcp
  dependency-version: 0.9.2
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -26,7 +26,7 @@ GEM
       metrics (~> 0.12)
       traces (~> 0.18)
     base64 (0.3.0)
-    bigdecimal (4.0.1)
+    bigdecimal (4.1.0)
     bson (5.2.0)
     capybara (3.40.0)
       addressable
@@ -151,7 +151,7 @@ GEM
     mailchimp_api_v3 (0.2.18)
       rest-client (~> 2)
     matrix (0.4.3)
-    mcp (0.9.0)
+    mcp (0.9.2)
       json-schema (>= 4.1)
     metrics (0.15.0)
     mime-types (3.7.0)