Remove 'SecurityCritical' attribute for psl-data

The list is used to prevent the setting of super-cookies for independent
domains, so in a way, the content is related to security.

Anyhow, having it always up to date is not super critical, as this is
used mostly as a band-aid. Also, the updates are fairly expensive in
file size, and as upstream doesn't do classic 'releases', we must define
how often we should update.

Let's remove the urgency to update it for every patch-level release by
removing the SecurityCritical attribute. Instead, we should aim for
updating it right before minor releases, so about twice a year. This is
btw what other projects are doing: Chromium updates the list
twice a year, Debian even less often.

Pick-to: 6.6 6.5 6.2 5.15
Change-Id: I05790f28002190ab0caa5a2a75e3b87cd44462d1
Reviewed-by: Marc Mutz <marc.mutz@qt.io>

src/3rdparty/libpsl/qt_attribution.json

@@ -13,14 +13,13 @@ It allows browsers to, for example:
 - Highlight the most important part of a domain name in the user interface
 
 - Accurately sort history entries by site",
-    "SecurityCritical": true,
-
     "Files": "psl_data.cpp",
     "QtUsage": "Used in Qt Network to avoid setting \"supercookies\" in the cookie jar
 supported by Qt (by the QNetworkCookieJar class).",
 
     "Comment": "Consult https://github.com/publicsuffix/list for the sha1 but download from ...",
     "Homepage": "http://publicsuffix.org/",
+    "Comment": "Suggested update schedule: twice per year (before a 6.x.0 release)",
     "Version": "1a4824549b093abc3077205ae5386ed57f73806d, fetched on 2023-09-20",
     "DownloadLocation": "https://publicsuffix.org/list/public_suffix_list.dat",