Assemblies in `aspnetcore-targeting-pack-<version>-win-<arch>.msi.wixpack.zip` are not being signed

[ellahathaway]

Assemblies in aspnetcore-targeting-pack-<version>-win-<arch>.msi.wixpack.zip are not being signed. They are strong-named.

This needs to be investigated.

[mmitche]

Resolved similar to #4987