chore: update winnow to 0.6+ and vecmap-rs to 0.2+

[gruebel]

• removed the bugfix suffix of the dependencies for hcl-edit to reduce dependabots update frequency. let me know, if you are ok with it. I can also do the same for the other crates or change it back 🙂
• fixed some clippy warnings, nothing troublesome

by the way, great project 💪 saved me for doing some regex juggling 😄

[martinohmann]

Hey @gruebel, thanks for your efforts to migrate to winnow 0.6!

CI is failing for nightly. This is not caused by your change and is already broken in main. I'm going to fix that and will let you know once this is done so you can rebase the PR.

[martinohmann]

@gruebel rebasing onto the latest main should get rid of the nightly build failure now.