At least since 2023-08-25 the cookie is set via `set-cookie' instead the
expecting `Set-Cookie' string. A month earlier it was working.
Ignore the case while matching the cookie.
Fixes: #4763
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
The current script is already broken due to Bind 9.16 -> 9.18 changes
due to their renaming scheme for primary/secondary so do not rely on the
compat layer (which was also broken for other reasons).
https://domains.google/learn/gts-acme/
This is an ACME API for Google Domains customers, which is
different from the Google Cloud Domains API for Google Cloud
customers.