feat: Make ArrowTypeId and Info enums Sendable

[dongjoon-hyun]

What's Changed

This PR aims to make ArrowTypeId and Info enums Sendable explicitly in order to compile on Swift 6+.

Closes #44.

[dongjoon-hyun]

To @kou , the CI failure is a known bug of setup-swift.

• Add workaround for gzipped gpg keys to fix random CI failures swift-actions/setup-swift#680

/usr/bin/gpg --import /home/runner/work/_temp/2b6adc8e-2d2d-41aa-9b9d-db24acd921f2
gpg: directory '/home/runner/.gnupg' created
gpg: keybox '/home/runner/.gnupg/pubring.kbx' created
gpg: no valid OpenPGP data found.
gpg: Total number processed: 0
Error: Unexpected error, unable to continue. Please report at https://github.com/swift-actions/setup-swift/issues
The process '/usr/bin/gpg' failed with exit code 2
Stacktrace:
Error: The process '/usr/bin/gpg' failed with exit code 2
    at ExecState._setResult (/home/runner/work/_actions/swift-actions/setup-swift/682457186b71c25a884c45c06f859febbe259240/dist/index.js:3197:25)
    at ExecState.CheckComplete (/home/runner/work/_actions/swift-actions/setup-swift/682457186b71c25a884c45c06f859febbe259240/dist/index.js:3180:18)
    at ChildProcess.<anonymous> (/home/runner/work/_actions/swift-actions/setup-swift/682457186b71c25a884c45c06f859febbe259240/dist/index.js:3074:27)
    at ChildProcess.emit (node:events:524:28)
    at maybeClose (node:internal/child_process:1104:16)
    at ChildProcess._handle.onexit (node:internal/child_process:304:5)

[dongjoon-hyun]

The CI fails 3 times consecutively with the same step, The process '/usr/bin/gpg' failed with exit code 2.

[kou]

Could you rebase on main to use Swift 6.0 and 6.1 on CI?