Add all remaining ingredients except peas, kale, and parsley to the Instant Pot®. Lock lid; set valve to sealing. Program for soup. Once cook time ends, allow for Natural Pressure Release. Open lid; stir in peas, kale, parsley, and mashed beans. Lock lid; set valve to sealing. Program for manual-high and 5 minutes. Allow for at least 5 minutes of natural pressure release.