Drop CI Image Build Caching

[TimPansino]

Overview

Recently we added caching to CI image builds. Unfortunately, this makes every single build a no-op as there's nothing in the image definition to bust the cache. This prevents us from getting the intended behavior of regularly updating dependencies and Python versions.

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ ACTION	actionlint	6		0	0	0.79s
✅ MARKDOWN	markdownlint	7	0	0	0	1.21s
✅ MARKDOWN	markdown-link-check	7		0	0	20.24s
✅ PYTHON	ruff	940	0	0	0	0.91s
✅ PYTHON	ruff-format	940	0	0	0	0.34s
✅ YAML	prettier	13	0	0	0	1.41s
✅ YAML	v8r	13		0	0	4.95s
✅ YAML	yamllint	13		0	0	0.62s

See detailed report in MegaLinter reports

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.47%. Comparing base (a581191) to head (6b1c268).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1493   +/-   ##
=======================================
  Coverage   81.47%   81.47%           
=======================================
  Files         210      210           
  Lines       23870    23870           
  Branches     3763     3763           
=======================================
  Hits        19448    19448           
  Misses       3158     3158           
  Partials     1264     1264           

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