pgsql: Update oldextversions test for pg_stat_statements 1.11

Update oldextversions test for pg_stat_statements 1.11

Commit 5a3423ad8e updated pg_stat_statements to 1.11 due to added
columns in the view for jit deform counters. Fixing oldextversion
was however missed in that commit.  This adds a test for the 1.11
version view definition.

Author: Nazir Bilal Yavuz <byavuz81@gmail.com>
Discussion: https://postgr.es/m/CAN55FZ2Y7c2VEg4S1KDXFcaHjyF8=KZa_rMV6WOe+KwE-KE97g@mail.gmail.com

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/c5a032e518acc259d31d5e7bd85acdea3b4e9c93

Modified Files
--------------
.../pg_stat_statements/expected/oldextversions.out | 58 ++++++++++++++++++++++
contrib/pg_stat_statements/sql/oldextversions.sql  |  5 ++
2 files changed, 63 insertions(+)