FIXUP: Fix a potential regex DOS attack

Signed-off-by: Taylor Smock <taylor.smock@kaart.com>

src/main/java/org/openstreetmap/josm/plugins/mapwithai/backend/MapWithAIDataUtils.java

@@ -61,7 +61,7 @@ public final class MapWithAIDataUtils {
 
     private static String paintStyleResourceUrl = DEFAULT_PAINT_STYLE_RESOURCE_URL;
     private static Pattern TEST_PATTERN = Pattern
-            .compile("https?:\\/\\/(www\\.)?localhost(:[0-9]+)?\\/josmfile\\?page=Styles\\/MapWithAI&zip=1");
+            .compile("^https?:\\/\\/(www\\.)?localhost(:[0-9]+)?\\/josmfile\\?page=Styles\\/MapWithAI&zip=1$");
 
     private MapWithAIDataUtils() {
         // Hide the constructor