Support for Swift 6.0?

[groue]

Hello,

The project_precommit_check script mentioned in the pull request template is limited to Swift up to 5.10.

As a consequence, one can't submit a pull request that targets Swift 6.0, and pass pull request requirements.

[groue]

I submitted a pull request for GRDB/Swift6.0 anyway: #964

[groue]

I forgot to add that the pull request template does not provide the correct way to call project_precommit_check. It says:

pass ./project_precommit_check script run

This is not... accurate as it should be. For an example of a real way to call it, see: #792. That's how it is supposed to be called:

./project_precommit_check GRDB.swift --earliest-compatible-swift-version 5.7

And it is not easy to guess.