libpq: add version 15.12

[the-nic]

Fixes for CVE-2024-12356

Summary

Changes to recipe: libpq/15.x

Motivation

Fixes for https://nvd.nist.gov/vuln/detail/CVE-2024-12356

Details

Just a version bump

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• Read the contributing guidelines
• Checked that this PR is not a duplicate: list of PRs by recipe
• Tested locally with at least one configuration using a recent version of Conan

[jcar87]

Hi @the-nic - thanks for your PR. Remember the new versions need to be added in config.yml as well.
As a side note - unless there's a strong reason to add or continue using the 14.x series, please only add the most recent version, thanks!

[the-nic]

Hi @the-nic - thanks for your PR. Remember the new versions need to be added in config.yml as well. As a side note - unless there's a strong reason to add or continue using the 14.x series, please only add the most recent version, thanks!

Thanks @jcar87 , at the point of the PR that was the latest version of v14/v15. I've removed my added v14 and bumped v15 to the latest and updated the yml.