PropertyLoader: Load .margin as insets

property-loader/src/main/java/com/github/weisj/darklaf/properties/parser/InsetParser.java

@@ -1,7 +1,7 @@
 /*
  * MIT License
  *
- * Copyright (c) 2019-2021 Jannis Weis
+ * Copyright (c) 2019-2023 Jannis Weis
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
  * associated documentation files (the "Software"), to deal in the Software without restriction,
@@ -27,7 +27,7 @@ import javax.swing.plaf.InsetsUIResource;
 public class InsetParser extends KeyFilteredParser implements Delimiters {
 
     public InsetParser() {
-        super("Insets", ".insets", ".margins");
+        super("Insets", ".insets", ".margins", ".margin");
     }
 
     @Override