Bump Xcode from 15.2 to 15.3

[uhooi]

References

PRs

• 214

• 159

Official documents and codes

• https://developer.apple.com/documentation/xcode-release-notes/xcode-15_3-release-notes
• https://www.swift.org/blog/swift-5.10-released/
• https://github.com/apple/swift/blob/26df3a39063c1b454f7316b0437709cd4bda5f90/CHANGELOG.md#swift-510
• https://github.com/apple/swift-evolution/blob/52decd74b4ac15d2873175ea53b97bc873633bea/proposals/0412-strict-concurrency-for-global-variables.md
• https://www.swift.org/documentation/concurrency/
• https://github.com/apple/swift/blob/release/5.10/include/swift/Basic/Features.def

3rd articles etc

• https://x.com/the_uhooi/status/1765301641983803716
• https://zenn.dev/treastrain/articles/d2fd1b44e3ead5