Improve regex detection of the augenrules from systemd service file.

RHEL10 /usr/lib/systemd/system/audit-rules.service content now has the
following:

ExecStart=/usr/sbin/augenrules --load

So the regex had to be updated to accept /usr but also /sbin in case the
other binary is used which should be still acceptable.

shared/checks/oval/audit_rules_augenrules.xml

@@ -20,7 +20,7 @@
   <ind:textfilecontent54_object id="object_audit_rules_augenrules" version="1">
   {{% if product in ['rhel10', 'ol10']  %}}
     <ind:filepath>/usr/lib/systemd/system/audit-rules.service</ind:filepath>
-    <ind:pattern operation="pattern match">^ExecStart=\/sbin\/augenrules.*$</ind:pattern>
+    <ind:pattern operation="pattern match">^ExecStart=(\/usr|)?\/sbin\/augenrules.*$</ind:pattern>
   {{% else %}}
     <ind:filepath>/usr/lib/systemd/system/auditd.service</ind:filepath>
     <ind:pattern operation="pattern match">^(ExecStartPost=\-\/sbin\/augenrules.*$|Requires=augenrules.service)</ind:pattern>