Updated plant creatures

Updated plant creatures for new plant class row in PRC8.  Updated levelup packages for oozes, plants & unintelligent undead.

_module/utc/shamblingmound.utc.json

@@ -14,7 +14,7 @@
   },
   "ChallengeRating": {
     "type": "float",
-    "value": 5.0
+    "value": 6.0
   },
   "ClassList": {
     "type": "list",
@@ -23,7 +23,7 @@
         "__struct_id": 2,
         "Class": {
           "type": "int",
-          "value": 39
+          "value": 164
         },
         "ClassLevel": {
           "type": "short",
@@ -597,7 +597,7 @@
   },
   "StartingPackage": {
     "type": "byte",
-    "value": 0
+    "value": 164
   },
   "Str": {
     "type": "byte",