Revert "fix: properly declare optional peer deps" #2107

[stefpb]

This reverts commit b08b1f0.

This commit fixes #2107

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[stefpb]

• i identify this commit b08b1f0
• fork this repo ( https://github.com/stefpb/test-utils )
• clone the repo
• i do a git revert b08b1f04681c703d1fd14f07272337f4e9ff2bfc
• solve (in a way) the conflicts of pnpm-lock.yaml
• git push
• create PR

[cexbrayat]

This reverts another change that we need to keep.
I'll open another PR, thanks for the help @stefpb

[cexbrayat]

I opened #2114 with what I had in mind.