Update module lib/pq to v1

go.mod

go.sum

vendor/github.com/lib/pq/.gitignore

vendor/github.com/lib/pq/.travis.sh

vendor/github.com/lib/pq/.travis.yml

vendor/github.com/lib/pq/CONTRIBUTING.md

vendor/github.com/lib/pq/README.md

vendor/github.com/lib/pq/array.go

vendor/github.com/lib/pq/buf.go

vendor/github.com/lib/pq/conn.go

vendor/github.com/lib/pq/conn_go18.go

vendor/github.com/lib/pq/connector.go

vendor/github.com/lib/pq/copy.go

vendor/github.com/lib/pq/doc.go

vendor/github.com/lib/pq/encode.go

vendor/github.com/lib/pq/error.go

vendor/github.com/lib/pq/go.mod

vendor/github.com/lib/pq/krb.go

vendor/github.com/lib/pq/notice.go

vendor/github.com/lib/pq/notify.go