IIQ Upgadre issue from 8.3 to 8.4p2

@nasiralam I have reviewed the release notes for this connector—SailPoint has introduced new features and resolved some existing issues.

Go through the release notes.
The SAP HR/HCM connector now correctly populates the values for communication data.
CONETN-4673
The SAP HR/HCM connector no longer fails during account aggregation
when a build map rule is configured.

CONETN-4355
The SAP HR/HCM Connector no longer creates dump in SAP target system when
an aggregation is performed.

SAP HR/HCM connector is now enhanced to configure with load balancer
parameters when SAP system is configured with load balancer at customer
end.
SAP HR/HCM connector is now certified with SAP S4Hana 2022 version.
CONNAMDANG-4337

@ Emanuele Nistri said how to read the custom attributes.