community[fix]: could not locate runnable browser

set open_browser to false to resolve "could not locate runnable browser" error while default browser is None

libs/community/langchain_community/tools/gmail/utils.py

@@ -89,7 +89,7 @@ def get_gmail_credentials(
             flow = InstalledAppFlow.from_client_secrets_file(
                 client_secrets_file, scopes
             )
-            creds = flow.run_local_server(port=0)
+            creds = flow.run_local_server(port=0, open_browser=False)
         # Save the credentials for the next run
         with open(token_file, "w") as token:
             token.write(creds.to_json())