fix: Update perk JSON against current perk inventory

It was only noticed after launch that the initial set of donation perks was not adjusted to match the current set of perks in production, and that we erroneously included the for-testing perks JSON file instead. This MR seeks to rectify this by bringing the perks JSON in line with what the production CiviCRM server exports from its up-to-date perk list (with some tweaking to accomodate the export process's current set of quirks).