roachtest: mark 2 psycopg tests as flaky

Release note: None

Author: rafiss

pkg/cmd/roachtest/tests/psycopg_blocklist.go

@@ -32,8 +32,10 @@ var psycopgIgnoreList = blocklist{
 	`tests.pool.test_pool_async.test_reconnect_failure[asyncio-True]`:                          "requires insecure mode",
 	`tests.pool.test_pool_async.test_refill_on_check[asyncio]`:                                 "requires insecure mode",
 	`tests.pool.test_pool_async.test_stats_connect[asyncio]`:                                   "requires insecure mode",
+	`tests.pool.test_pool_common.test_queue[NullConnectionPool]`:                               "test is timing dependent, see https://github.com/cockroachdb/cockroach/issues/143491",
 	`tests.pool.test_pool_common.test_setup_no_timeout[ConnectionPool]`:                        "requires insecure mode",
 	`tests.pool.test_pool_common.test_setup_no_timeout[NullConnectionPool]`:                    "requires insecure mode",
+	`tests.pool.test_pool_common.test_stats_usage[NullConnectionPool]`:                         "test is timing dependent, see https://github.com/cockroachdb/cockroach/issues/143491",
 	`tests.pool.test_pool_common_async.test_queue[asyncio-AsyncNullConnectionPool]`:            "requires insecure mode",
 	`tests.pool.test_pool_common_async.test_setup_no_timeout[asyncio-AsyncConnectionPool]`:     "requires insecure mode",
 	`tests.pool.test_pool_common_async.test_setup_no_timeout[asyncio-AsyncNullConnectionPool]`: "requires insecure mode",