Skip another initially deferred test on CockroachDB

tx_test.go

@@ -105,6 +105,10 @@ func TestTxCommitWhenDeferredConstraintFailure(t *testing.T) {
 	conn := mustConnectString(t, os.Getenv("PGX_TEST_DATABASE"))
 	defer closeConn(t, conn)
 
+	if conn.PgConn().ParameterStatus("crdb_version") != "" {
+		t.Skip("Server does not support deferred constraint (https://github.com/cockroachdb/cockroach/issues/31632)")
+	}
+
 	createSql := `
     create temporary table foo(
       id integer,