Use specific collation where needed in new test
Oversight in commit a379061a22a8.
Per Czech buildfarm members jay and hippopotamus.
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/17bcf4f5450430f67b744c225566c9e0e6413e95
Modified Files
--------------
src/test/regress/expected/constraints.out | 2 +-
src/test/regress/sql/constraints.sql | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)