[Chore] Clean up stack.yaml

[gromakovsky]

Description

1. context and glider-nlp are listed as Slacker's deps, but they are not. Let's move them outside.
2. context-0.2.0.1 is available in the resolver we are using. Let's delete it from extra-deps.
3. The most recent tztime is available on Hackage, let's get it from there.

Related issue(s)

None

:white_check_mark: Checklist for your Pull Request

Related changes (conditional)

• Tests

  • [x] If I added new functionality, I added tests covering it.
  • [x] If I fixed a bug, I added a regression test to prevent the bug from silently reappearing again.

• Documentation

  • [x] I checked whether I should update the docs and did so if necessary:
  • README
  • Haddock

Stylistic guide (mandatory)

• [x] My commits comply with the policy used in Serokell.
• [x] My code complies with the style guide.

✓ Release Checklist

• [ ] I updated the version number in package.yaml.
• [ ] (After merging) I created a new entry in the releases page, with a summary of all user-facing changes.
  • I made sure a tag was created using the format vX.Y

[dcastro]

Looks like we need to nix flake lock --update-input hackage (and possibly hackage.nix as well)

[gromakovsky]

My local Nix installation got broken again, so, @dcastro, if you have everything setup locally to run this command (nix flake lock --update-input hackage) with no trouble could you please do it and push the change? If you need to do something more than that, you can leave it to me.

[dcastro]

@gromakovsky done, seems to be building now! :smile: