Update Personal/Carer's Leave category code enum value to match the API

[samuel-holt-xero]

Update the AU Payroll LeaveCategoryCode enum to match the updated value in the API.

Description

• Update the LeaveCategoryCode enum value "PERSONALCARERSLEAVE" to "PERSONALSICKCARERSLEAVE"

Release Notes

• The leave category code in the API has been updated, this needs to be updated in the SDK

Screenshots (if appropriate):

Types of Changes

• [ ] Bug fix (non-breaking change that fixes an issue)
• [x] New feature (non-breaking change that adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)