https://wikitech.wikimedia.org/wiki/Fundraising/Data_and_flow/Exchange_rates
we were using this PaymentData/ReferenceData/CurrencyRates.php for payment rate conversion, so would be nice to have this hard code copy up to date a bit more frequent

quaterly canlender create for us to remember doing this hard copy update, as we did this https://gerrit.wikimedia.org/r/c/wikimedia/fundraising/SmashPig/+/1201833, then smashpig version update to trigger update for donate wiki https://donate.wikimedia.org/w/index.php?title=MediaWiki:DonationForm.js

this hard copy will be used for FE monthly convert and the update recurring amount and suggest for annual recurring