[Bug Fix] Add support for AWS_REGION override (#1237)

embedchain/llm/aws_bedrock.py

@@ -1,3 +1,4 @@
+import os
 from typing import Optional
 
 from langchain.llms import Bedrock
@@ -25,7 +26,7 @@ class AWSBedrockLlm(BaseLlm):
                 'Please install with `pip install --upgrade "embedchain[aws-bedrock]"`'
             ) from None
 
-        self.boto_client = boto3.client("bedrock-runtime", "us-west-2")
+        self.boto_client = boto3.client("bedrock-runtime", "us-west-2" or os.environ.get("AWS_REGION"))
 
         kwargs = {
             "model_id": config.model or "amazon.titan-text-express-v1",