Update sepgsql regression test results for commit ca4103025.

Per buildfarm.

contrib/sepgsql/expected/alter.out

@@ -260,6 +260,7 @@ LOG:  SELinux: allowed { setattr } scontext=unconfined_u:unconfined_r:sepgsql_re
 ALTER TABLE regtest_ptable ADD CONSTRAINT test_ck CHECK (p like '%abc%') NOT VALID;      -- not supported by sepgsql
 ALTER TABLE regtest_ptable DROP CONSTRAINT test_ck;      -- not supported by sepgsql
 ALTER TABLE regtest_ptable SET TABLESPACE pg_default;
+LOG:  SELinux: allowed { setattr } scontext=unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0 tcontext=unconfined_u:object_r:sepgsql_table_t:s0 tclass=db_table name="regtest_schema_2.regtest_ptable"
 -- partitioned table child
 ALTER TABLE regtest_table_part ALTER p SET DEFAULT 'abcd';   -- not supported by sepgsql
 ALTER TABLE regtest_table_part ALTER p SET DEFAULT 'XYZ';    -- not supported by sepgsql