Merge pull request #5188 from cvium/fix_manifest_bom

Exclude BOM when writing meta.json plugin manifest

(cherry picked from commit fba80cf6f9)
Signed-off-by: Joshua M. Boniface <joshua@boniface.me>

Emby.Server.Implementations/Plugins/PluginManager.cs

@@ -348,7 +348,7 @@ namespace Emby.Server.Implementations.Plugins
             try
             {
                 var data = JsonSerializer.Serialize(manifest, _jsonOptions);
-                File.WriteAllText(Path.Combine(path, "meta.json"), data, Encoding.UTF8);
+                File.WriteAllText(Path.Combine(path, "meta.json"), data);
                 return true;
             }
 #pragma warning disable CA1031 // Do not catch general exception types