Fix arm64 arch name

[wcbing]

These two are reversed in 3.0 beta package metadata and filename.

> apt-ftparchive packages ./appimagelauncher_3.0.0-alpha-4-gha253.36951ec_aarch64.deb 
Package: appimagelauncher
Architecture: aarch64
...

• https://wiki.debian.org/Multiarch/Tuples#Architectures_in_Debian
• https://fedoraproject.org/wiki/Architectures

[TheAssassin]

Thanks! Good catch, actually. Let's see if the CI passes. Also, thanks for the links. Architecture names are a huge mess and there is no central source of information. Someone ™️ should probably do something ™️ about it.

[TheAssassin]

OK, wow, the branch protection completely failed here. I'll fix that and I'll try to fix the build afterwards. Thanks anyway!

[TheAssassin]

Seems like it was just a temporary issue, the continuous release built just fine.