pgsql: Raise a timeout to 180s, in test 003_recovery_targets.pl.

Raise a timeout to 180s, in test 003_recovery_targets.pl.

Buildfarm member chipmunk has failed twice due to taking >30s, and
twenty-four runs of other members have used >5s.  The test is new in
v13, so no back-patch.

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/896135512ef67cc084f5e058cfa9b4954ca26861

Modified Files
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src/test/recovery/t/003_recovery_targets.pl | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)