fix: resolve merge conflict for v10.0.1 (User-Agent header)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: JOY

apps/explorer/lib/explorer/token/metadata_retriever.ex

@@ -13,11 +13,7 @@ defmodule Explorer.Token.MetadataRetriever do
   @no_uri_error "no uri"
   @vm_execution_error "VM execution error"
   @invalid_base64_data "invalid data:application/json;base64"
-<<<<<<< HEAD
-  @default_headers [{"User-Agent", "blockscout-9.3.5"}]
-=======
   @default_headers [{"User-Agent", "blockscout-10.0.1"}]
->>>>>>> v10.0.1
 
   # https://eips.ethereum.org/EIPS/eip-1155#metadata
   @erc1155_token_id_placeholder "{id}"