Update peaceiris/actions-gh-pages action to v4

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
peaceiris/actions-gh-pages	action	major	v3 -> v4

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Release Notes

peaceiris/actions-gh-pages (peaceiris/actions-gh-pages)

v4

Compare Source

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Configuration

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (f25fdd8) to head (0b83c61). Report is 22 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #368   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
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  Files           28        28           
  Lines          490       490           
  Branches        76        76           
=========================================
  Hits           490       490           

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[tobysmith568]

Don't merge this. We should switch to using actions/deploy-pages