* fix: use native namespace to avoid pkg_resources warnings

* remove comment header of empty files

* bring in line with auth library changes

* lint

* fix coverage

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* add tests and remove namespace_packages in setup.py

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* mark this as a system test

* remove test for now

* remove obsolete namespace list

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Source-Link: googleapis/synthtool@febaccc
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:caffe0a9277daeccc4d1de5c9b55ebba0901b57c2f713ec9c876b0d4ec064f61

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

* chore(python): Add Python 3.12

Source-Link: googleapis/synthtool@af16e6d
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:bacc3af03bff793a03add584537b36b5644342931ad989e3ba1171d3bd5399f5

* Add trove classifier for python 3.12

* Update contributing.rst, noxfile and constraints to include python 3.12

* remove usage of deprecated assertDictContainsSubset python/cpython#28268

* update tests KMS key settings

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Anthonios Partheniou <[email protected]>
Co-authored-by: Cathy Ouyang <[email protected]>

…lates/python_library/.kokoro (#1190)

Source-Link: googleapis/synthtool@9367caa
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:2f155882785883336b4468d5218db737bb1d10c9cea7cb62219ad16fe248c03c

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: cojenco <[email protected]>

* chore(deps): update all dependencies

* See https://github.com/pandas-dev/pandas/releases/tag/v2.1.0

---------

Co-authored-by: Anthonios Partheniou <[email protected]>

Fixes #1184

* feat: add support for object retention lock

* add Retention config object in Blob

* update tests

* update test coverage

* clarify docstrings

---------

Co-authored-by: Anthonios Partheniou <[email protected]>

* fix: clarify error message and docstrings

* run docs

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>