Updates latex logos to match brand guidelines

Purpose

Resolves https://gitlab.com/gitlab-com/legal-and-compliance/-/issues/620

Updates the latex logos to be compliant with their brand guidelines

Screenshots

Before	After

Checklist

For third-party trademarks:

• If this adds or updates an icon or illustration that includes a third-party trademark, ensure that it follows the process for adding third-party trademarks to GitLab.