Fix merge-signing for schmie
Fix merge-signing for schmie

Likely make update_merge_keys was run with an outdated key.
Re-ran `make update_merge_keys`.

alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf