Merge pull request #5957 from matkoniecz/kill_landuse_conservation

landuse=conservation to boundary=protected_area

data/deprecated.json

@@ -179,6 +179,10 @@
       "old": {"highway": "unsurfaced"},
       "replace": {"highway": "road", "incline": "unpaved"}
     },
+    {
+      "old": {"landuse": "conservation"},
+      "replace": {"boundary": "protected_area"}
+    },
     {
       "old": {"landuse": "farm"},
       "replace": {"landuse": "farmland"}