👷 [RUM-7634] Add deploy and source maps upload scripts tests

[amortemousque]

Motivation

Our deployment scripts have become increasingly complex, and the lack of tests makes further changes both challenging and prone to errors. This PR adds test for the CDN deployment script and the source maps upload script.

I’ve chosen to test the scripts by verifying their outputted commands rather than splitting the script and testing each function. I found this approach clearer, as it allows us to easily see the expected commands directly in the tests.

Changes

• Adds tests deploy.spec.js and upload-source-maps.spec.js
• Adapt eslint rules for script spec files

Testing

• Local
• Staging
• Unit
• End to end

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I have gone over the contributing documentation.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.42%. Comparing base (17b3cbb) to head (522dea8).
Report is 9 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3211      +/-   ##
==========================================
- Coverage   93.43%   93.42%   -0.02%     
==========================================
  Files         282      282              
  Lines        7721     7721              
  Branches     1732     1732              
==========================================
- Hits         7214     7213       -1     
- Misses        507      508       +1     

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[sethfowler-datadog]

LGTM; this is a great addition!