Bump certifi from 2022.12.7 to 2023.7.22

[bayandin]

Problem

Closes https://github.com/neondatabase/neon/security/dependabot/31.
Dependabot didn't update it because of dependabot/dependabot-core#7389

Summary of changes

• Bump certifi python package in indirect dependencies from 2022.12.7 to 2023.7.22

Checklist before requesting a review

• I have performed a self-review of my code.
• If it is a core feature, I have added thorough tests.
• Do we need to implement analytics? if so did you add the relevant metrics to the dashboard?
• If this PR requires public announcement, mark it with /release-notes label and add several sentences in this section.

Checklist before merging

• Do not forget to reformat commit message to not include the above checklist

[github-actions]

1240 tests run: 1188 passed, 0 failed, 52 skipped (full report)

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Flaky tests (1)

Postgres 15

• test_branch_and_gc: release