wechat: Update to 3.9.9.43, fix checkver

[b4imetu]

Relates to #12762

• [x] I have read the Contributing Guide.

PS. the https://webcdn.m.qq.com/spcmgr/download/WeChat3.9.9.43.exe

WeChat$version.exe I don't know if it will change to WeChatSetup_$version.exe someday

[github-actions[bot]]

All changes look good.

Wait for review from human collaborators.

wechat

• [x] Description
• [x] License
• [x] Hashes
• [x] Checkver
• [x] Autoupdate

[aliesbelik]

Seems been fixed in 54a501e. Checkver and autoupdate work properly. Is this change really necessary?

[b4imetu]

Checkver and autoupdate work properly. Is this change really necessary?

It is not necessary, but it can be combined with the download link (https://webcdn.m.qq.com/spcmgr/download/WeChat$version.exe) to change this manifest to a non-nightly form.

It can be regarded as an alternative method. Or we can close this PR, it doesn't matter.