chore(mcp-client): release 1.2.20

[ulivz]

Summary

Release @agent-infra/mcp-client@1.2.20

Checklist

• Added or updated necessary tests (Optional).
• Updated documentation to align with changes (Optional).
• Verified no breaking changes, or prepared solutions for any occurring breaking changes (Optional).
• My change does not involve the above items.

[netlify]

✅ Deploy Preview for agent-tars-docs canceled.

Name	Link
🔨 Latest commit	9f6f475
🔍 Latest deploy log	https://app.netlify.com/projects/agent-tars-docs/deploys/68add1b1d131c4000860942e

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 14.26%. Comparing base (858c8c7) to head (9f6f475).
⚠️ Report is 29 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1270   +/-   ##
=======================================
  Coverage   14.26%   14.26%           
=======================================
  Files         250      250           
  Lines        8562     8562           
  Branches     1672     1672           
=======================================
  Hits         1221     1221           
  Misses       7166     7166           
  Partials      175      175           

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