Revert "Fix base64 urlencoding in test data."
Revert "Fix base64 urlencoding in test data."

This reverts commit 8417842d1226d4fb36d1be1967057478ee66ce61.

Hm, so now this doesn't seem reproducible in our CI environment or in a
fresh setup.

NREL/api-umbrella,apinf/api-umbrella,apinf/api-umbrella,apinf/api-umbrella,NREL/api-umbrella,NREL/api-umbrella,apinf/api-umbrella,NREL/api-umbrella,apinf/api-umbrella