[DDW-169] Fix installers build on darwin
[DDW-169] Fix installers build on darwin

Ensures that target directories exist so that iconutil works.

input-output-hk/daedalus,input-output-hk/daedalus,input-output-hk/daedalus,input-output-hk/daedalus,input-output-hk/daedalus,input-output-hk/daedalus