chore: fix bitcoin source schema
diff --git a/bitcoin-source.kamelet.yaml b/bitcoin-source.kamelet.yaml
index a12b250..9d35788 100644
--- a/bitcoin-source.kamelet.yaml
+++ b/bitcoin-source.kamelet.yaml
@@ -22,7 +22,6 @@
     out:
       mediaType: application/json  
       schema:
-        additionalProperties: true
         type: object
         properties:
           currencyPair: