Update QtInstallerFramework #2
Description
See: https://github.com/i-RIC/solver.cap/runs/4183483001?check_suite_focus=true
QtInstallerFramework needs to be changed to what prepost-gui (https://github.com/i-RIC/prepost-gui/tree/develop_v4) is using:
https://github.com/i-RIC/prepost-gui/blob/develop_v4/appveyor.yml#L214-L220