The main motivation for this change is to stop using the deprecated
set-output function which triggers deprecation warnings in the action.
Change-Id: I80496c44ea1166b9c40d5cd9e450129778ad4aaf
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
So that I just get a quick PR to approve and merge instead of
periodically discovering that the SRI hash has bitrotted.
Signed-off-by: David Anderson <danderson@tailscale.com>