[docs] missing changelog for `v3.0.2`

[zkdev]

Hi,

v3.0.2 was released a month ago, however changelog was not adjusted.

Will there be a proper changelog, or will consumers need to check diff individually?

[TheMoonDawg]

Also curious about this!

[MorrisonCole]

Here's the compare for anyone landing on this issue: v3.0.1...v3.0.2