fix commit message

update.rb

@@ -78,6 +78,7 @@ def get_output_file(product)
 end
 
 def generate_commit_message
+  begin
     products = Set.new
     ret = nil
     msg = ""
@@ -95,6 +96,9 @@ def generate_commit_message
       end
     end
     ret ? "🤖: #{products.join(', ')}\n\n#{msg}": ""
+  rescue StandardError => e
+    "🤖: Automatic Update"
+  end
 end
 
 def get_releases(product, config, i)