Mask API key for ChatOpenAI based chat_models (#14293)

- **Description**: Mask API key for ChatOpenAi based chat_models
(openai, azureopenai, anyscale, everlyai).
Made changes to all chat_models that are based on ChatOpenAI since all
of them assumes that openai_api_key is str rather than SecretStr.
  - **Issue:**: #12165 
  - **Dependencies:**  N/A
  - **Tag maintainer:** @eyurtsev
  - **Twitter handle:** N/A

---------

Co-authored-by: Chester Curme <[email protected]>

libs/community/langchain_community/chat_models/everlyai.py

@@ -8,7 +8,7 @@
 
 from langchain_core.messages import BaseMessage
 from langchain_core.pydantic_v1 import Field, root_validator
-from langchain_core.utils import get_from_dict_or_env
+from langchain_core.utils import convert_to_secret_str, get_from_dict_or_env
 
 from langchain_community.adapters.openai import convert_message_to_dict
 from langchain_community.chat_models.openai import (
@@ -79,10 +79,12 @@ def get_available_models() -> Set[str]:
     @root_validator(pre=True)
     def validate_environment_override(cls, values: dict) -> dict:
         """Validate that api key and python package exists in environment."""
-        values["openai_api_key"] = get_from_dict_or_env(
-            values,
-            "everlyai_api_key",
-            "EVERLYAI_API_KEY",
+        values["openai_api_key"] = convert_to_secret_str(
+            get_from_dict_or_env(
+                values,
+                "everlyai_api_key",
+                "EVERLYAI_API_KEY",
+            )
         )
         values["openai_api_base"] = DEFAULT_API_BASE