Disable SA1309

jellyfin.ruleset

@@ -5,5 +5,7 @@
     <Rule Id="SA1101" Action="None" />
     <!-- disable warning SA1200: Using directive must appear within a namespace declaration -->
     <Rule Id="SA1200" Action="None" />
+    <!-- disable warning SA1309: Fields must not begin with an underscore -->
+    <Rule Id="SA1309" Action="None" />
   </Rules>
 </RuleSet>