chore(tests): dotnet format sobre archivos pre-existentes (surfaced durante CAT-001)

Fix mecánico de whitespace detectado por dotnet format --verify-no-changes durante la verify phase de CAT-001 (PR #30). Sin cambios funcionales.

tests/SIGCM2.Application.Tests/Infrastructure/Audit/JsonSanitizerTests.cs

@@ -154,9 +154,17 @@ public sealed class JsonSanitizerTests
 
         var input = new
         {
-            password = "1", passwordHash = "2", token = "3", refreshToken = "4",
-            accessToken = "5", cvv = "6", card = "7", cardNumber = "8",
-            secret = "9", apiKey = "10", privateKey = "11",
+            password = "1",
+            passwordHash = "2",
+            token = "3",
+            refreshToken = "4",
+            accessToken = "5",
+            cvv = "6",
+            card = "7",
+            cardNumber = "8",
+            secret = "9",
+            apiKey = "10",
+            privateKey = "11",
             keep = "yes",
         };