Update sqlparser-derive to use syn 2.0

[serprex]

https://github.com/dtolnay/syn/releases/tag/2.0.0

[tobyhede]

@serprex Some more context on this change would be useful ... I assume it is updating syn?

[serprex]

Yes

[alamb]

Thank you for this contribution @serprex

[coveralls]

Pull Request Test Coverage Report for Build 7009097570

• 0 of 17 (0.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.004%) to 87.706%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
derive/src/lib.rs	0	17	0.0%

Totals
Change from base Build 7008917646:	-0.004%
Covered Lines:	17992
Relevant Lines:	20514

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💛 - Coveralls

[serprex]

Won't have time this weekend to look into, but will look at how to run tests & fix next week (I only ran cargo test in derive crate)

[alamb]

Thanks @serprex . Converting to a draft while review feedback is being addressed. Please mark it ready for review when it is ready for another look

[alamb]

Given I think this may be a non trivial change, I plan to merge this immediately after #1030

Then this PR will have maximum "bake time" for early adopters and others to try it out before I release it on crates.io

[alamb]

It seems according to
https://docs.rs/syn/latest/syn/index.html#optional-features

Listing these 4 will at least avoid

clone-impls (enabled by default) — Clone impls for all syntax tree types.

[alamb]

Looks good to me -- thank you @serprex

I took the liberty of merging up from main and reducing the feature set used

[alamb]

Thanks again @serprex and @tobyhede