Bug 40370: (QA follow-up) Change raw filter to html

The diff doesn't contain intentional HTML formatting, and pre tags do
not prevent un-escaped HTML from being interpreted, so we should not
use the raw filter here

Signed-off-by: Emily Lamancusa <emily.lamancusa@montgomerycountymd.gov>
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
(cherry picked from commit c702e2ea4e)
Signed-off-by: Paul Derscheid <paul.derscheid@lmscloud.de>
(cherry picked from commit 37a4ec3c0d)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>

koha-tmpl/intranet-tmpl/prog/en/modules/about.tt

@@ -816,7 +816,7 @@
         [% IF db_audit.diff_found %]
             <div>
                 <pre>
-                    <code>[% db_audit.diff | $raw %]</code>
+                    <code>[% db_audit.diff | html %]</code>
                 </pre>
             </div>
         [% END %]