pack.sh: embed prerelease suffix in VERSION
pack.sh: embed prerelease suffix in VERSION

This is similar to how we do it on uno: https://github.com/fuse-open/uno/blob/ad4fbcdb3d358a4fdd0b1bb5fb7aa7eee1d4c160/scripts/pack.sh#L31

kusma/fuselibs-public,fusetools/fuselibs-public,fusetools/fuselibs-public,kusma/fuselibs-public,kusma/fuselibs-public,kusma/fuselibs-public,kusma/fuselibs-public,fusetools/fuselibs-public,fusetools/fuselibs-public,fusetools/fuselibs-public,fusetools/fuselibs-public,fusetools/fuselibs-public,kusma/fuselibs-public,kusma/fuselibs-public