pgsql: Fix regression test outputs

Fix regression test outputs

75445c1 has caused various failures in tests across the tree after
updating some error messages, so fix the newly-expected output.

Author: Michael Paquier
Reviewed-by: Tom Lane
Discussion: https://postgr.es/m/8332.1558048838@sss.pgh.pa.us

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/6ba500cae6f57acf8f392d9e1671640f7c9d43b3

Modified Files
--------------
contrib/citext/expected/citext.out | 2 +-
contrib/citext/expected/citext_1.out | 2 +-
src/test/regress/expected/copy2.out | 6 +++---
src/test/regress/expected/create_table.out | 4 ++--
src/test/regress/expected/jsonb_jsonpath.out | 2 +-
src/test/regress/expected/jsonpath.out | 2 +-
src/test/regress/expected/publication.out | 2 +-
src/test/regress/expected/regex.out | 2 +-
src/test/regress/expected/strings.out | 12 ++++++------
src/test/regress/expected/subscription.out | 4 ++--
src/test/regress/output/copy.source | 2 +-
11 files changed, 20 insertions(+), 20 deletions(-)