[DEVOPS-653] Appveyor CI: Copy installers from all builds to S3
[DEVOPS-653] Appveyor CI: Copy installers from all builds to S3

Appveyor CI artifact downloads are flaky. Copy installers to S3 so
that testers can download them.

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