fix: update to new version of About The Accessibility Exchange - ASL video (resolves #2253)

[jobara]

Resolves #2253

• updates the ASL video for About The Accessibility Exchange on the welcome page
• regenerated the tokens file, although no changes were made to the contents

Prerequisites

If this PR changes PHP code or dependencies:

• I've run composer format and fixed any code formatting issues.
• I've run composer analyze and addressed any static analysis issues.
• I've run php artisan test and ensured that all tests pass.
• I've run composer localize to update localization source files and committed any changes.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Additional details and impacted files

@@          Coverage Diff           @@
##             dev    #2255   +/-   ##
======================================
  Coverage       ?   97.31%           
  Complexity     ?     2188           
======================================
  Files          ?      338           
  Lines          ?     9946           
  Branches       ?        0           
======================================
  Hits           ?     9679           
  Misses         ?      267           
  Partials       ?        0           

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