[Improvement]: bump sqlx to 0.8.1 about shuttle HOT 5 OPEN

I'm also onboard for helping solve this issue, as I'm an interested party.
I just never opened a PR on this repo and maybe could use some guidance, although from what I've seen the Contribution and Developing guides are quite thorough.

from shuttle.

Thanks for giving attention to this. It's an easy change to make: Bump the version in the shared db and AWS RDS crates, and make sure they compile. After that works, all examples using it can be updated.

from shuttle.

I forgot that we already did this in #1847. What we can do now that 0.8.1 is released is to bump it again. There is a bug in 0.8.1 that will make it not compile on Rust < 1.80 which our CI uses, but we can ignore that (just run the CI command locally with 1.80).

from shuttle.

Seems like sqlx dep has already been bumped, and all that is needed is a new breaking release of shuttle-shared-db.

from shuttle.

Yep, solved in #1867. Awaiting release.

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