user.changePassword:after
$newUser, $oldUser
return [
    'hooks' => [
        'user.changePassword:after' => function ($newUser, $oldUser) {
            // your code goes here
        }
    ]
]$newUser, $oldUser
return [
    'hooks' => [
        'user.changePassword:after' => function ($newUser, $oldUser) {
            // your code goes here
        }
    ]
]