FindJasper: Fix Jasper::Jasper IMPORTED_CONFIGURATIONS

In commit 6e8754c625 (FindJasper: Add IMPORTED target, 2021-10-06,
v3.22.0-rc1~20^2) this property was not set correctly.  This was
detected by `CMP0160` because the `IMPORTED` property is read-only.
1 file changed