fix(go/adbc/driver/snowflake): use one session for connection (#2494) #480

Job	Run time
check (macOS, adbcbigquery) / r-check	2m 37s
check (macOS, adbcdrivermanager) / r-check	1m 42s
check (macOS, adbcflightsql) / r-check	2m 46s
check (macOS, adbcpostgresql) / r-check	2m 19s
check (macOS, adbcsnowflake) / r-check	3m 5s
check (macOS, adbcsqlite) / r-check	2m 23s
check (ubuntu, adbcbigquery) / r-check	3m 28s
check (ubuntu, adbcdrivermanager) / r-check	2m 22s
check (ubuntu, adbcflightsql) / r-check	4m 58s
check (ubuntu, adbcpostgresql) / r-check	3m 18s
check (ubuntu, adbcsnowflake) / r-check	3m 21s
check (ubuntu, adbcsqlite) / r-check	3m 21s
check (windows, adbcbigquery) / r-check	6m 32s
check (windows, adbcdrivermanager) / r-check	3m 55s
check (windows, adbcflightsql) / r-check	4m 42s
check (windows, adbcpostgresql) / r-check	5m 26s
check (windows, adbcsnowflake) / r-check	7m 20s
check (windows, adbcsqlite) / r-check	3m 46s
	1h 7m 21s

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