ci: update CircleCI config for GitHub Pages deployment process

[raffaele-oplabs]

Description

This pull request includes several changes to the .circleci/config.yml file to improve the deployment process and update the user information handling. The most important changes include updating the way user email is extracted, modifying the branch checkout process, and removing the force push option.

Improvements to user information handling:

• Replaced the method of extracting the commit user email with a new approach that retrieves the user ID from the GitHub API and constructs a noreply email address. .circleci/config.ymlL100-R115

The previous commit was made by using the PR last commit username/email, while this approach retrieve the user that triggered the pipeline.

Changes to the branch checkout process:

• Updated the script to fetch and checkout the target branch instead of creating a new orphan branch. .circleci/config.ymlL100-R115

Other changes:

• Removed the --force option from the git push command to prevent overwriting history. .circleci/config.ymlL120-R126

Tests

Additional context

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