fix: line length violations in abci.proto and CI environment notes

[devin-ai-integration]

Description

This PR addresses remaining issues in the main branch to ensure compliance with contributing guidelines:

1. Fixed line length violations in abci.proto:

   • Shortened comments while maintaining semantic meaning
   • Improved formatting for better readability
   • Verified PROTOCOL_GENERATOR_VERSION compatibility (using framework version 1.0.0)

2. Fixed protocol generation issues:

   • Renamed CheckTxTypeEnum to CheckTxType for proper UpperCamelCase naming
   • Fixed line wrapping for response_apply_snapshot_chunk
   • Ensured consistent formatting throughout the file

3. Resolved license compatibility issue:

   • Added attrs package (>=24.3.0) to authorized packages list
   • Verified MIT license compatibility
   • Ensured proper license check configuration

Note on CI Environment

The MacOS-12 environment in GitHub Actions is deprecated. GitHub recommends upgrading to:

• macOS-13
• macOS-14 (macos-latest)
• macOS-15

Reference: actions/runner-images#10721
This infrastructure change requires maintainer approval.

Testing

• Verified line length fixes in abci.proto
• Confirmed PROTOCOL_GENERATOR_VERSION compatibility
• Verified attrs package license configuration
• Pushed changes to origin for CI verification

Link to Devin run: https://app.devin.ai/sessions/3311a8ec4a834cd3939fe3a353976093

[devin-ai-integration]

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