Fixed issue

Author: kevinmessiaen

giskard/llm/client/bedrock.py

@@ -44,7 +44,7 @@ def complete(
         system_prompts = []
         for msg in messages:
             if msg.role.lower() == "system":
-                system_prompts = system_prompts.append(msg.content)
+                system_prompts.append(msg.content)
             elif msg.role.lower() == "assistant":
                 input_msg_prompt.append({"role": "assistant", "content": [{"type": "text", "text": msg.content}]})
             else: