🌱 move from golang/mock to uber/gomock

[tylerauerbeck]

What kind of change does this PR introduce?

This moves from the deprecated golang/mock package to the fork hosted by uber

• PR title follows the guidelines defined in our pull request documentation

What is the current behavior?

Currently uses github.com/golang/mock/gomock for mocking. This switches to utilize the supported fork at go.uber.org/mock/gomock.

What is the new behavior (if this is a feature change)?**

No change in behavior. Mocking works as it does today.

• Tests for the changes have been added (for bug fixes/features)

Which issue(s) this PR fixes

Fixes #4451

Special notes for your reviewer

There are existing failing lints which appear to be addressed in a handful of recent PR's.

Does this PR introduce a user-facing change?

N/A

NONE

[spencerschrock]

Thank you! Only one small question

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.29%. Comparing base (353ed60) to head (adde65a).
Report is 176 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4645      +/-   ##
==========================================
+ Coverage   66.80%   68.29%   +1.48%     
==========================================
  Files         230      249      +19     
  Lines       16602    18884    +2282     
==========================================
+ Hits        11091    12896    +1805     
- Misses       4808     5129     +321     
- Partials      703      859     +156     

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