Changes to Update a Benchmark.

the request property attribution became not nullable

the request property description became not nullable

the request property metadata became not nullable

the request property name became not nullable

the request property required_environment_variables became not nullable

the request property required_secret_names became not nullable

the request property scenario_ids became not nullable

added the required property status to the response with the 200 status

the request property name became nullable

the request property required_secret_names became nullable

the request property name became optional