Add mistralai as a dev dependency #1892

Job	Run time
benchmark_sql_algorithm	1m 48s
benchmark_with_flask_mysql (3.11)	2m 3s
benchmark_with_flask_mysql (3.13)	2m 28s
benchmark_with_starlette_app (3.10)	2m 42s
benchmark_with_starlette_app (3.13)	2m 58s
benchmark_with_starlette_app (3.9)	2m 1s
benchmark_with_starlette_app (3.11)	2m 38s
benchmark_with_flask_mysql (3.12)	1m 40s
benchmark_with_flask_mysql (3.10)	2m 15s
benchmark_with_starlette_app (3.12)	2m 39s
benchmark_with_flask_mysql (3.9)	2m 20s
	25m 32s

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