XQuartz download recipe pointing to old Sparkle feed

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Describe the problem
XQuartz.download.recipe is pointing at Sparkle feeds

https://www.xquartz.org/releases/sparkle/release.xml
https://www.xquartz.org/releases/sparkle/beta.xml

depending on override.

Those feeds are still showing v2.8.2, when the latest is v2.8.4. When I saw that my Munki server was not updating XQuartz, I initially thought the feeds maybe hadn't been updated. So I opened an issue with the XQuartz folks. But the developers told me

It might be an old binary.
Current Stable Sparkle link is: https://www.xquartz.org/releases/sparkle-r1/release.xml

So looks like the URL needs to be updated in the recipe. I have confirmed both the release and beta feeds are there. Either that or use the XQuartz GitHub repo to track the latest release.

Preferences contents
Not really relevant here.

AutoPkg output
N/A.

Expected behavior
I expected the recipe to find and download the latest release, XQuartz 2.8.4. Instead, it keeps pulling down 2.8.2 and therefore not updating.

Version (please complete the following information):

• OS version: 13.1
• AutoPkg Version: 2.7.2