Fix comparison of BigDecimal values to use compareTo() instead of equals()

Author: gmfeinberg

driver/src/main/java/oracle/nosql/driver/values/NumberValue.java

@@ -136,7 +136,7 @@ public String toJson(JsonOptions options) {
     @Override
     public boolean equals(Object other) {
         if (other instanceof NumberValue) {
-            return value.equals(((NumberValue) other).value);
+            return (value.compareTo(((NumberValue) other).value) == 0);
         }
         return false;
     }