Added SecureStr for NLP Cloud #10232

Job	Run time
Python 3.8 extended tests	5m 21s
Python 3.9 extended tests	5m 22s
Python 3.10 extended tests	5m 13s
Python 3.11 extended tests	5m 25s
test with unpublished langchain-core - Python 3.8	51s
test with unpublished langchain-core - Python 3.9	55s
test with unpublished langchain-core - Python 3.10	51s
test with unpublished langchain-core - Python 3.11	50s
lint / build (3.8)	2m 36s
test / Python 3.8	1m 2s
lint / build (3.11)	2m 45s
test / Python 3.9	59s
test / Python 3.10	50s
test / Python 3.11	49s
compile-integration-tests / Python 3.8	1m 6s
compile-integration-tests / Python 3.9	1m 12s
compile-integration-tests / Python 3.10	1m 16s
compile-integration-tests / Python 3.11	1m 10s
pydantic-compatibility / Pydantic v1/v2 compatibility - Python 3.8	57s
pydantic-compatibility / Pydantic v1/v2 compatibility - Python 3.9	56s
pydantic-compatibility / Pydantic v1/v2 compatibility - Python 3.10	55s
pydantic-compatibility / Pydantic v1/v2 compatibility - Python 3.11	56s
	42m 17s

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