chore(deps): update earthly/earthly docker tag to v0.8.8

[renovate]

This PR contains the following updates:

Package	Update	Change
earthly/earthly	minor	v0.7.23 -> v0.8.8

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 8.11%. Comparing base (5bec8df) to head (4a8db22).

❗ Current head 4a8db22 differs from pull request most recent head 88d4e06. Consider uploading reports for the commit 88d4e06 to get more accurate results

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #522   +/-   ##
=====================================
  Coverage   8.11%   8.11%           
=====================================
  Files         15      15           
  Lines        937     937           
=====================================
  Hits          76      76           
  Misses       845     845           
  Partials      16      16           

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