Project Browser: Update logo for Session Limit

Problem/Motivation

The Project Browser Initiative wants nice project logos for better UX. The logo will be displayed on the card for your module in the Project Browser (as well as on drupalcode.org as your project avatar, and on drupal.org on your project page).

The Session Limit module needs a logo for this objective.

Proposed resolution

• Create a logo that is 512x512 square dimension in PNG format without animations.
• The file size should be 10k or less.
• Use a lossy image tool (such as pngquant) to reduce the file size while keeping the image quality at around 80%.

Examples:

https://www.drupal.org/files/issues/2024-07-04/jQuery-UI-Selectable-fs8.png
https://www.drupal.org/files/issues/2023-05-03/Embed-Project-Logo.png
https://www.drupal.org/files/issues/2022-04-28/pathauto-fs8.png
https://www.drupal.org/files/issues/2022-09-23/search_api.png
https://www.drupal.org/files/issues/2022-09-23/Rest%20UI.png
https://www.drupal.org/files/issues/2023-08-16/entity_queue_3.png
https://www.drupal.org/files/issues/2022-10-04/views_slideshow_logo_1.png
https://www.drupal.org/files/issues/2022-09-30/redis-project-browser-cub...
https://www.drupal.org/files/issues/2022-09-23/DropzoneJS_v2-min.png
https://www.drupal.org/files/issues/2023-08-14/File_Metadata_Manager_2.png

MAINTAINERS: Once a logo is reviewed and approved, it should be added to the root folder of your project's repo, and be named logo.png. This must be present on your project’s default branch. If you have a logo as the first image in the Images field on your project page, please remove it. The logo will be displayed on the cards in the Project Browser grid and list views.

Review steps

1. Review any logos on this ticket.
2. Provide design feedback if applicable.
3. If multiple logos are provided, choose your preferred one.
4. Ensure logo meet the requirements:
   • 512px by 512px square
   • PNG format
   • no animations
   • 10k file size or less
   • reasonable image quality
   • visually represents the project