Add Care Quality Commission to email whitelist

CQC is an executive non-departmental public body, sponsored by the
Department of Health.

They have asked to be allowed to register for Notify using the
`cqc.org.uk` and `digital.cqc.org.uk` domains. We know that this really
is there domain because it’s linked to from here:

https://www.gov.uk/government/organisations/care-quality-commission

app/config.py

@@ -82,6 +82,7 @@ class Config(object):
         r"scotent\.co\.uk",
         r"assembly\.wales",
         r"cjsm\.net",
+        r"cqc\.org\.uk",
     ]