simplify

src/main/java/gov/usgs/earthquake/nshmp/www/HazVersion.java

@@ -2,6 +2,7 @@ package gov.usgs.earthquake.nshmp.www;
 
 import java.nio.file.Path;
 import java.util.ArrayList;
+import java.util.Arrays;
 
 import org.eclipse.jgit.api.Git;
 
@@ -15,10 +16,7 @@ public class HazVersion implements AppVersion {
   private static final String MODEL_FILE = "model-version.json";
 
   public static VersionInfo[] appVersions(Path modelPath) {
-    var versions = new ArrayList<VersionInfo>();
-    versions.add(new HazVersion().getVersionInfo());
-    versions.add(new LibVersion().getVersionInfo());
-
+    var versions = Arrays.asList(versions());
     var nshmVersion = getNshmVersion(modelPath);
 
     if (nshmVersion != null) {