fix(gui): Fix missing promisify in file picker model
fix(gui): Fix missing promisify in file picker model

Change-Type: patch

resin-io/etcher,resin-io/herostratus,resin-io/resin-etcher,resin-io/etcher,resin-io/etcher,resin-io/resin-etcher,resin-io/etcher,resin-io/herostratus,resin-io/etcher