Fix bin-image workflow JSON parsing error

[djs55]

Summary

• Updates the crazy-max/.github reusable workflow from commit d9a10e2 to 387d336 (latest)
• Updates CircleCI configuration to use Xcode 14.3.1 with m4pro.medium resource class
• Fixes both GitHub Actions and CircleCI build failures observed in PR #654

Problem 1: GitHub Actions JSON Parsing Error

The bin-image workflow was failing with:

SyntaxError: Bad control character in string literal in JSON at position 13871

This occurred because the older version of the workflow used actions/github-script@v7 which embedded GitHub event payloads (containing PR body text with newlines and other control characters) directly into a JavaScript template literal containing JSON. When JSON.parse() tried to parse this, it encountered unescaped control characters and failed.

Problem 2: CircleCI Resource Class Incompatibility

The CircleCI build was failing with:

Job was rejected because resource class m4pro.medium, image xcode:14.0.0 is not a valid resource class

Xcode 14.0.0 is not compatible with the new default m4pro.medium resource class. CircleCI changed the default macOS resource class for free plans on November 10, 2025, and Xcode 14.0.0 only supports older M1/M2 resource classes which are being deprecated in February 2026.

Solution

GitHub Actions Fix

The newer version of the crazy-max/.github workflow uses actions/github-script@v8 which properly handles JSON serialization, preventing control character parsing errors.

CircleCI Fix

Updated to use Xcode 14.3.1 (latest Xcode 14.x version) with explicit resource_class: m4pro.medium specification. This combination is supported per CircleCI's compatibility matrix and ensures long-term compatibility.

Testing

This should fix the build failures observed in PR #654: https://github.com/moby/vpnkit/actions/runs/20041297769/job/57478620313

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