Use file scoped namespace.

src/Services/Services.Common/JsonHelper.cs

@@ -1,12 +1,11 @@
 using System.Text.Json;
 
-namespace Services.Common
+namespace Services.Common;
+
+public static class JsonHelper
 {
-    public static class JsonHelper
+    public static readonly JsonSerializerOptions CaseInsensitiveOptions = new()
     {
-        public static readonly JsonSerializerOptions CaseInsensitiveOptions = new()
-        {
-            PropertyNameCaseInsensitive = true
-        };
-    }
+        PropertyNameCaseInsensitive = true
+    };
 }