chore: remove deprecated parameter build-base

[mr-cal]

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• Have you successfully run make lint?
• Have you successfully run pytest tests/unit?

---

Stop passing the deprecated parameter build_base to craft-providers to avoid the warning intended for developers:

Deprecated: Parameter 'build_base' is deprecated and should not be used. The build base now comes from the base_configuration's alias.

Note this is already fixed on main.

Source: https://matrix.to/#/!GGqzbFAUQprdPgYYCM:ubuntu.com/$bxytvo9JAtlAkoLNJyXsaQ-4xUM0xRBMLxwP_f1jh34?via=ubuntu.com&via=matrix.org&via=xentonix.net

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (7bd0d3a) 94.88% compared to head (23e4031) 94.88%.

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Additional details and impacted files

@@             Coverage Diff             @@
##           hotfix/7.5    #4505   +/-   ##
===========================================
  Coverage       94.88%   94.88%           
===========================================
  Files             658      658           
  Lines           55192    55192           
===========================================
  Hits            52367    52367           
  Misses           2825     2825           

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[lengau]

LGTM!

I gather the spread test failures on Ubuntu 18.04 are related to a new release of node or something? Definitely doesn't seem related to this.

[mr-cal]

LGTM!

I gather the spread test failures on Ubuntu 18.04 are related to a new release of node or something? Definitely doesn't seem related to this.

Correct, I need to make an issue for that unrelated node failure.