Issue title: install Join Lines extension error message.
 Issue body: install Join Lines, repot error:
The path /var/folders/gf/8s36y8491txc9djblqwnbqp40000gn/T/TemporaryItems/(A Document Being Saved By PopClip)/JoinLines.popclipext does not contain a valid PopClip extension.

Reason: Could not load Config.plist. The XML may be malformed.

I have done:
1. download it from https://pilotmoon.com/popclip/extensions/page/JoinLines, same issue
2. donload it from github https://github.com/pilotmoon/PopClip-Extensions/blob/master/extensions/JoinLines.popclipextz, same issue.
3.  reboot the macOS catalina, same issue.
what can I do ???
 Comments: 
 Comment 0: Hi, what version of PopClip are you using? You will need to be running vesion 2022.5 or later.
 Comment 1: Hi Support,

THanks for your advice.
Popclip version: 201910(3032)
MacOS is Catalina 10.15.7 (19H1824)

When I update popclip , a error message as below:

"An error occurred while extracting the archive. Please try again later."

I have done:
1. try another 1 proxy to download the update, failed.
2. try another 2 proxy to download the update, update same failed.

sorry, what can I do?


 Comment 2: I recommend to manually install by downloading from https://pilotmoon.com/popclip/download or the Mac App Store.
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