Version upgrade to 2.4.0 (confluentinc#1742)

Release version changes for v2.4.0rc3

Update semaphore.yml

Updated version to 2.3.0

Introduced pyproject.toml and moved static metadata from setup.py

Introduced pyproject.toml and moved static metadata from setup.py

Few Changelog and doc changes. Final release version. (confluentinc#1666

)

Fix describe user scram credentials (confluentinc#1630)

for describing all users

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Co-authored-by: Emanuele Sabellico <[email protected]>
Co-authored-by: Pranav Rathi <[email protected]>
Co-authored-by: Milind L <[email protected]>

Fixing linux arm64 build

Added Python 3.12 wheels