Update "Tasks - All" collection name

[jphechter]

Description

This is a follow-on to #12441, and updates the name of the "Tasks - All" collection to indicate that this information can be sync'd to the Webflow CMS.

Ticket

Did not create a ticket.

Approach

Updates the collection name in the Decap CMS config.

Steps to Test

Confirm the collection name looks correct in the Decap CMS.

Code author checklist

• I have rebased this branch from the latest main branch
• I have performed a self-review of my code
• My code follows the style guide
• I have created and/or updated relevant documentation on the engineering documentation website
• I have not used any relative imports
• I have pruned any instances of unused code
• I have not added any markdown to labels, titles and button text in config
• If I added/updated any values in userData (including profileData, formationData etc), then I added a new migration file
• I have checked for and removed instances of unused config from CMS
• If I added any new collections to the CMS config, then I updated the search tool and cmsCollections.ts (see CMS Additions in Engineering Reference/FAQ on the engineering documentation site)
• I have updated relevant .env values in .env-template, in Bitwarden, and in our workspaces
• I have added the request-reviewer tag on github to request reviews