Fix RBD numbering in Nextclade pathogen JSON

Fixes the RBD numbering for the H3N2 HA pathogen JSON in the Nextclade
workflow to use zero-based indexing instead of one-based. Following from
@rneher's change in the nextclade_data repo [1].

[1] nextstrain/nextclade_data@3354843

nextclade/dataset_config/h3n2/ha/EPI1857216/pathogen.json

@@ -25,13 +25,13 @@
           "name": "differences",
           "weight": 1,
           "locations": {
-            "145": {"default":1},
+            "144": {"default":1},
+            "154": {"default":1},
             "155": {"default":1},
-            "156": {"default":1},
+            "157": {"default":1},
             "158": {"default":1},
-            "159": {"default":1},
-            "189": {"default":1},
-            "193": {"default":1}
+            "188": {"default":1},
+            "192": {"default":1}
           }
         }
       ]