Google's Gary Illyes said that the Googlebot JSON file IP address list is updated within a few days of a new IP being added to the list of IPs that Googlebot crawls from.

Google has updated the JSON files with the list of IP addresses Googlebot. I believe Google added one new IP6 and one new IP4 IP address to the list. That is, if I am looking at the file correctly.

Most importantly to election integrity advocates, Dupuis said he will release the records in a JSON file, which is a text-based format used to easily analyze large data sets.