Remove "private" modifier for enum constructor

src/main/java/at/ac/uibk/gitsearch/service/dto/SearchResultsDTO.java

@@ -28,7 +28,7 @@ public class SearchResultsDTO {
 
 		private final String externalName;
 
-		private GitProjectVisibility(String externalName) {
+		GitProjectVisibility(String externalName) {
 			this.externalName = externalName;
 		}