Action when user uploads avatar photo

In my previous topic i tried to find a way to use Google Avatar and Ultimate Member integrated.

This is the code i have so far:

/*##################################################################
#   Integrate Ultimate Member and Google Profile Avatars plugins   #
##################################################################*/

// Part 1: Add 'google_avatar' user meta with default value of true

// define the um_registration_set_extra_data callback 
function my_registration_set_extra_data( $user_id, $args ) {
    add_user_meta( $user_id, 'google_avatar', 'Use Google Avatar', true );

    return $user_id;
}

// add the action
add_action( 'um_registration_set_extra_data', 'my_registration_set_extra_data', 10, 2 );

// Part 2: Resolve which avatar to return

// define the um_user_avatar_url_filter callback 
function filter_um_user_avatar_url_filter( $um_avatar_url, $user_id ) { 
    $google_avatar_url = get_user_meta( $user_id, 'gpa_user_avatar', true );
    $use_google_avatar = ! empty(get_user_meta( $user_id, 'google_avatar', true ));

    // user has Google avatar?
    if( ! empty( $google_avatar_url ) ){
        // user marked 'Use Google Avatar' in profile? (marked true by default)
        if( $use_google_avatar ) {
            // return Google avatar
            return $google_avatar_url;
        }  else {
            // return UM avatar
            return $um_avatar_url;
        }
    }
    // return UM avatar
    return $um_avatar_url; 
}; 
         
// add the filter 
add_filter( 'um_user_avatar_url_filter', 'filter_um_user_avatar_url_filter', 10, 2 ); 

Now all i have left to do is to fire an action once the user uploads an avatar via the UM profile page, this action will set the user meta of google_avatar to false (the default is to use the Google Avatar, but once a user uploads his own avatar it means he would like to use it and not the Google one).

I’m looking for some hook that i can use to do this action once a user uploads an avatar but i couldn’t find it in the hooks list nor the code itself.

Is there a good way to achieve this functionality?