build: switch from bun to pnpm

[davidlj95]

Was interesting, but I prefer working software

bun made the build break in https://github.com/davidlj95/chrislb/pull/278#issuecomment-1913710987

TBH don't why appeared there, as nothing build-related is changed.

[davidlj95]

Current dependencies on/for this PR:

• main
  • PR #279 👈
  • PR #280

This stack of pull requests is managed by Graphite.

[davidlj95]

Merge activity

• Jan 28, 9:55 PM: @davidlj95 merged this pull request with Graphite.