pgsql: Require version 0.98 of Test::More for TAP tests

Require version 0.98 of Test::More for TAP tests

This means that the subtest feature will be available for use.

We expect that this change will make prairiedog go red until it is
updated, but other buildfarm animals should be fine.

Discussion: https://postgr.es/m/f5e1d308-4e33-37a7-bdf1-f6e0c75119de@dunslane.net

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/405f32fc49609eb94fa39e7b5e7c1fe2bb2b73aa

Modified Files
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configure                              | 2 +-
configure.ac                           | 2 +-
src/test/perl/PostgreSQL/Test/Utils.pm | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)