Bump @linearb/gitstream-core to 2.1.211

[github-actions]

✨ PR Description

Purpose: Enhance error handling for large PRs by improving size estimation and error message handling for oversized pull requests.
Main changes:

• Extracted error message to constant function for better reusability
• Made size estimation utilities exportable for cross-module use
• Added proper error detection for 413 status codes with more accurate error reporting

CHANGELOG

🐛 Bug Fixes

• Fixed error handling for large pull requests with clearer error messages and better size detection.

🔧 Improvements

• Improved size estimation for large files with more accurate calculations and better error messages.

Generated by LinearB AI and added by gitStream.
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[orca-security-us]

Orca Security Scan Summary

Status	Check	Issues by priority
Passed	Infrastructure as Code	0   0   0   0	View in Orca
Passed	SAST	0   0   0   0	View in Orca
Passed	Secrets	0   0   0   0	View in Orca
Passed	Vulnerabilities	0   0   0   0	View in Orca