chore: Remove openssh from slt crate cargo.toml #5299

Job	Run time
Build	6m 17s
Unit Tests	5m 45s
Node.js Binding Tests	4m 19s
Process Integration Tests (pytest)	1m 20s
Python Binding Tests	4m 17s
PG Protocol Tests	1m 48s
SQL Logic Tests (postgres)	36s
Lint and Format	2m 46s
SQL Logic Tests (flightsql)	23s
Datasource Integration (Clickhouse)	1m 28s
SQL Logic Tests (rpc)	5m 20s
Datasource Integration (Cassandra)	1m 44s
Datasource Integration (Mysql)	2m 16s
Service Integration Tests (SLT)	5m 56s
Datasource Integration (MongoDB)	38s
Datasource Integration (Sqlserver)	7m 52s
Snowflake Service Integration Tests (SLT::Snowflake)	1m 32s
	54m 17s

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