This drops the annoying usage of builtins.currenTime, which means that
my website stops constantly rebuilding.
Change-Id: I44294b06588673846f473beb6533a5fa3410a1bd
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2767
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI