Missing lib build products

[jtbandes]

We used to pin this workflow by SHA, e.g.

- uses: mislav/bump-homebrew-formula-action@b3327118b2153c82da63fd9cbf58942146ee99f0

This pinning technique is recommended in https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-third-party-actions

However, eventually as we bumped the version to latest main (with the help of Dependabot), we started encountering this error:

Error: File not found: '/home/runner/work/_actions/mislav/bump-homebrew-formula-action/868bf7871f81dda58cc50fe1d17ea83ae1f3f929/./lib/index.js'

It seems like this is because lib is not committed to the repo. It is present in the v3 branch, but not on main. Would it be possible to keep this present and up to date? This seems to be what other actions do, e.g.: https://github.com/actions/checkout/tree/main/dist