remove redundant yaml and @types/yaml packages

[shiftkey]

This package is no longer needed: https://github.com/desktop/dugite-native/actions/runs/4923581323/jobs/8795561706#step:5:7

npm WARN deprecated @types/yaml@1.9.7: This is a stub types definition. yaml provides its own type definitions, so you do not need this installed.

This seems to pass npm run check locally, but as a follow-up I couldn't see any mentions of the yaml package so I've removed that to confirm CI passes as well...

[tidy-dev]

✨ Thanks for the tidying.