Version 1.8.* Update Dockerfile: libpq-dev version to supported version

[nickagel]

libpq-dev=13.14-0+deb11u1 -> libpq-dev=13.15-0+deb11u1

The image is currently in a broken state

The following packages have unmet dependencies:
libpq-dev : Depends: libpq5 (= 13.14-0+deb11u1) but 13.15-0+deb11u1 is to be installed Unable to correct problems, you have held broken packages.

Problem

Docker build is currently failing due to dependency issue. There is a specified version that is no longer supported of libpq-dev=13.14-0+deb11u1. This causes the build to fail and is unable to resolve and upgrade

docker build --tag dbt-build-image-local --target dbt-third-party --build-arg dbt_third_party=dbt-redshift==1.8.1 --build-arg commit_ref=v1.8.3 https://raw.githubusercontent.com/dbt-labs/dbt-core/v1.8.3/docker/Dockerfile

Solution

upgrade libpq-dev to 13.15-0+deb11u1 & the issue is resolved for building the docker image

Checklist

• I have read the contributing guide and understand what's expected of me
• I have run this code in development and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• This PR has no interface changes (e.g. macros, cli, logs, json artifacts, config files, adapter interface, etc) or this PR has already received feedback and approval from Product or DX
• This PR includes type annotations for new and modified functions

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[github-actions]

Thank you for your pull request! We could not find a changelog entry for this change. For details on how to document a change, see the contributing guide.

[nickagel]

I have now signed the cla-signed