[pgpool-committers: 10283] pgpool: Test: fix 006.memqcache regression test.

[Tatsuo Ishii]

Test: fix 006.memqcache regression test.

4dd7371c2 added test cases. SQL syntax used in the test was not
compatible with PostgreSQL 15 or earlier.

Backpatch-through: v4.2

Branch
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V4_2_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=667016a2d4b85eb6e1687443642a58f9d0d42353

Modified Files
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src/test/regression/tests/006.memqcache/expected.3            | 4 ++--
src/test/regression/tests/006.memqcache/query_cache_bug3.data | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)