fix: change permissions to read and update verification for cmake-set…

[hanniavalera]

This pull request updates the documentation generation workflow to improve security and ensure that documentation is always up to date before merging. The main changes involve modifying permissions and replacing the automatic commit step with a verification step.

Workflow security and process improvements:

• Changed the workflow's contents permission from write to read to reduce the risk of unintended repository modifications.
• Removed the automatic commit and push step for updated documentation, replacing it with a verification step that checks if docs/cmake-settings.md is up to date. If the file is outdated, the workflow fails with an error message instructing the user to update and commit the file manually.