Bump Julia compat entry to 1.10

[penelopeysm]

Mooncake, and Enzyme 0.13, and Turing, only support Julia 1.10+ so I figure we may as well drop support for anything before it.

I tidied up the GHA workflows a bit too.

[torfjelde]

Happy with this! But can you bump the minor version since this will be breaking?

[penelopeysm]

@torfjelde I'm sorry I missed this!

Do you explain how bumping Julia compatibility is breaking? The way I see it, for anybody on >=1.10, nothing changed. For anybody on <1.10, the new version effectively doesn't exist, so there is no breakage.

[torfjelde]

That's a fair argument 👍 I think it's a bit of a gray area: I agree that it won't actually break anyone's code, however it arguably marks a point where we stop supporting pre-1.10 versions. I think one good argument for doing it is that it'll be easier to do backports of bugfixes if we end up feeling the need for that: we can just release new versions on the previous minor version.

Sensible or nah?

[penelopeysm]

True that's a good argument:) Semver also doesn't mandate that a non-breaking release has to be a patch, so I'm also quite happy to just consider bumping Julia compat to be a minor release based on convention. Thanks!