Merge branch 'max-dir-pga-update' into 'main'

Update PGA max-dir scaling to 1.2

Closes #578

See merge request !825

src/main/java/gov/usgs/earthquake/nshmp/www/hazard/MaxDirection.java

@@ -38,7 +38,7 @@ class MaxDirection {
 
   static {
     Map<Imt, Double> map = new EnumMap<>(Imt.class);
-    map.put(PGA, 1.0);
+    map.put(PGA, 1.200);
     map.put(SA0P01, 1.200);
     map.put(SA0P02, 1.200);
     map.put(SA0P03, 1.200);