Upgrade the InnoSetup installer to the latest version #255
Description
Near the end of development of blueCFD-Core 2024-1, we found out that InnoSetup has evolved considerably over the years and that some/much of the functionality we had to code ourselves, is no longer needed.
Furthermore, functionality like the /SINGLEUSER=1 option is much better supported in newer versions, via PrivilegesRequiredOverridesAllowed: https://jrsoftware.org/ishelp/index.php?topic=setup_privilegesrequiredoverridesallowed