[5.7] Make the `Regex` type Sendable#467

natecook1000 merged 1 commit intoswiftlang:swift/release/5.7swiftlang/swift-experimental-string-processing:swift/release/5.7from

natecook1000:5.7/sendablenatecook1000/swift-experimental-string-processing:5.7/sendableCopy head branch name to clipboard