chore(deps): update actions/cache action to v3

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
actions/cache	action	major	v2 -> v3

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Release Notes

actions/cache

### [`v3`](https://togithub.com/actions/cache/compare/v2...v3) [Compare Source](https://togithub.com/actions/cache/compare/v2...v3)

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[codecov[bot]]

Codecov Report

Merging #87 (1e5f3ce) into master (8ad8bbd) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #87   +/-   ##
=======================================
  Coverage   87.96%   87.96%           
=======================================
  Files           1        1           
  Lines         108      108           
  Branches       41       41           
=======================================
  Hits           95       95           
  Misses         13       13           

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[uport-automation-bot]

:tada: This PR is included in version 2.2.1 :tada:

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