ignore checkstyle

Author: SirCotare

src/test/java/it/aboutbits/springboot/toolbox/swagger/customization/force_schema/ForceSchemaCustomizerTest.java

@@ -29,6 +29,7 @@ public static class InnerClass {
         public record InnerRecord(String recordField) {
         }
 
+        @SuppressWarnings("checkstyle:FinalClass")
         private static class PrivateInnerClass {
             public String privateField;
         }