deps: Update dependency pg8000 to v1.31.1

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
pg8000	==1.30.5 -> ==1.31.1

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Release Notes

tlocke/pg8000 (pg8000)

### [`v1.31.1`](https://togithub.com/tlocke/pg8000/compare/1.31.0...1.31.1) [Compare Source](https://togithub.com/tlocke/pg8000/compare/1.31.0...1.31.1) ### [`v1.31.0`](https://togithub.com/tlocke/pg8000/compare/1.30.5...1.31.0) [Compare Source](https://togithub.com/tlocke/pg8000/compare/1.30.5...1.31.0)

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