chore: drop support for Swift 5.10 and Xcode 15.x #791
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This change updates the minimum requirements to Swift 6.0+ and Xcode 16.0+ following our support policy. As outlined in the README, dropping Swift and Xcode versions is not considered a breaking change and can be done in minor releases. With the release of Xcode 16 on September 16, 2024, we can now safely drop support for older versions to take advantage of new Swift 6 features and improvements. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
- Update latest job to use Xcode 26.0 (was 16.3) - Update legacy job to use Xcode 16.3 (was 15.4) as minimum supported - Update library evolution and examples jobs to Xcode 26.0 - Remove all Xcode 15.x references from CI
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Summary
Rationale
According to our Support Policy, dropping Swift and Xcode versions is not considered a breaking change and can be done in minor releases.
With the release of Xcode 26 on September 15, 2025, we can now safely drop support for Swift 5.10 and Xcode 15.x to take advantage of new Swift 6 features and improvements while maintaining our policy of supporting current submission-eligible Xcode versions.
Test plan
🤖 Generated with Claude Code