pgsql: Add regression expected-files for older OpenSSL in FIPS mode.

Add regression expected-files for older OpenSSL in FIPS mode.

Cover contrib/pgcrypto, per buildfarm.

Author: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: /messages/by-id/443709.1757876535@sss.pgh.pa.us
Backpatch-through: 17

Branch
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REL_18_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/ef5ee0e346182600015b38eb41cace179ce6566f

Modified Files
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contrib/pgcrypto/expected/hmac-md5_2.out | 44 ++++++++++++++++++++++++++++++++
contrib/pgcrypto/expected/md5_2.out | 17 ++++++++++++
2 files changed, 61 insertions(+)