pgsql: Change role names used in trigger test.

Change role names used in trigger test.

The choices made in commit 01463e1cc might pose copyright hazards,
and are more cutesy than informative anyway.

Reported-by: Noah Misch <noah(at)leadboat(dot)com>
Author: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Discussion: https://postgr.es/m/[email protected]

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/4b05ebf0957bc796b9ea8f4d2ab5985714ef3252

Modified Files
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src/test/regress/expected/triggers.out | 26 +++++++++++++-------------
src/test/regress/sql/triggers.sql | 18 +++++++++---------
2 files changed, 22 insertions(+), 22 deletions(-)