This reverts commit 0345b40a.

null = this lookup returned nothing last time
undefined = no cached result found

Co-authored-by: Yura Beznos <yury.beznos@ocado.com>
Co-authored-by: Jamie Magee <JamieMagee@users.noreply.github.com>
Co-Authored-By: Michael Kriese <michael.kriese@visualon.de>
Co-Authored-By: Rhys Arkins <rhys@arkins.net>

* refactor(github): Remove old Github platform wrappers

* Refactor 'util/cache/run' imports

* Fix pod http client

* Fix test

* refactor(pod): Split request functions

Co-authored-by: Michael Kriese <michael.kriese@visualon.de>
Co-authored-by: Rhys Arkins <rhys@arkins.net>

This reverts commit 787e6bc4.

* chore(deps): update dependency prettier to v2

* Run prettier-fix

Co-authored-by: Renovate Bot <bot@renovateapp.com>
Co-authored-by: Jamie Magee <jamie.magee@gmail.com>

Ref #5555

A follow-up to #4246 which was insufficient.

* feat(changelog): Support Maven style tag format

* Fix lint error