Rebrand: Update the Learning Equality logo

[akolson]

Observed behavior

The old Learning Equality logo is still displayed in studio

Expected behavior

The new Learning Equality logo should be used instead. See logo below;

User-facing consequences

Using different logos could cause confusion considering this is a rebrand of the product

Additional information

Steps to reproduce the issue

1. Log into Studio
2. Click on the Content Creation tab.

Usage Details

• OS: NA
• Browser: NA
• URL: https://hotfixes.studio.learningequality.org/en/channels/#/public
• Other information that may be relevant:

[rtibbles]

Fixed in #4523