Show keyFromValues error

[3kyro]

Backends send helpful information on composite key errors but we don't get to see it.

-Before submitting your PR, check that you've:

• [x ] Ran stylish-haskell on any changed files.
• [ x] Adhered to the code style (see the .editorconfig file for details)

After submitting your PR:

• [ x] Update the Changelog.md file with a link to your PR
• [ x] Bumped the version number if there isn't an (unreleased) on the Changelog
• [ x] Check that CI passes (or if it fails, for reasons unrelated to your change, like CI timeouts)

[parsonsmatt]

Thanks for the PR! This is a good improvement 😄

There's two suggestions to review.

Please update the persistent/persistent.cabal file with the new version number, and I'll get this released shortly.

The CI failure appears to be spurious - if you merge master, it should be fixed and run fine.

Thanks!

[3kyro]

I've added your review changes, thanks :)

[parsonsmatt]

awesome, thanks!

[parsonsmatt]

Released as persistent-2.13.0.1 😄