Require Swift 6.1

[glessard]

Whenever we determine that our next minor version will be cut after the release of Swift 6.3, then we should merge this.

[glessard]

@swift-ci please test

[glessard]

@swift-ci please test

[FranzBusch]

The swiftlang Swift version support strategy is the following:

Packages should support the latest patch releases of the last three minor official Swift releases.

Even though this package isn't part of swiftlang and can follow its own Swift version support strategy it would be good if we could follow it since a lot of the ecosystem is expecting it. This means we should only drop support for 6.0 once 6.4 is released.

[glessard]

On the very next line:

For example, if the currently latest Swift release is 6.2.1 then a package would be expected to support 6.2.1, 6.1.3 and 6.0.3.

I read this to mean that once 6.3 is out we can drop 6.0.x; this is what we have done for the other packages.

[jrflat]

release/1.7.0 is open if we want to target this there

[FranzBusch]

I read this to mean that once 6.3 is out we can drop 6.0.x; this is what we have done for the other packages.

Yes that's correct. Sorry I mixed up the versions about. If 6.3 is out then packages should support 6.1x., 6.2.x and 6.3.x