Remove pinned "zip.js" version in `package.json`

[ggetz]

#10694 pinned zip.js to 2.4 in order to fix #10684 based on this recommendation by the zip.js maintainer. Once the package no longer uses TransformStream, this workaround should be removed.

[ggetz]

An issue with the pinned version of zip reported in #11526.

[ramtob]

@ggetz
Hi. Is there some working plan when this issue will be dealt with?

[jjhembd]

Since #11598, we have updated the minimum Node version to 18, which now supports TransformStream. With Node 18 or higher installed, the test in #10684 runs through without error.

I think we can update zip now. @ggetz or @mramato am I missing anything?

[mramato]

@jjhembd No, that sounds reasonable to me.

[ggetz]

Sounds good to me @jjhembd.