go: Update Postgres dependencies

This MR contains the following updates:

Package	Type	Update	Change
github.com/jackc/pgconn	require	minor	v1.12.1 -> v1.13.0
github.com/jackc/pgtype	require	minor	v1.11.0 -> v1.12.0
github.com/jackc/pgx/v4	require	minor	v4.16.1 -> v4.17.0

MR created with the help of gitlab-org/frontend/renovate-gitlab-bot

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Release Notes

jackc/pgconn

v1.13.0

Compare Source

jackc/pgtype

v1.12.0

Compare Source

jackc/pgx

v4.17.0

Compare Source

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