Add build workflow job with concentrated docs artefact

[Monteth]

This pull request updates the CI workflow by decoupling the documentation build and deployment steps from the integrity checks. We have introduced a new job that only runs after the CI checks have successfully completed. In the previous setup, there was a possibility that the documentation could be deployed when using Node.js version 20.x, even if tests failed in other versions within the matrix. This issue has now been addressed and prevented. Additionally, we have included an artifact that compiles all documentation into a single file. This compiled document is intended for use with the uniforms assistant custom GPT model.

[codecov[bot]]

Codecov Report

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

Project coverage is 94.37%. Comparing base (1436d4c) to head (8d71d98).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1310 +/- ## ======================================= Coverage 94.37% 94.37% ======================================= Files 229 229 Lines 3754 3754 Branches 1011 1011 ======================================= Hits 3543 3543 Misses 81 81 Partials 130 130 ```

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