Release v2.2.3

no functional changes compared to v2.2.2

• this release fixed a poetry/docker build issue
• the v2.2.2 branch was not a proper release, but a branch with this name, explaining why it doesn't appear in "/releases"
• as the v2 branch is still providing the :latest release but is in main branch overtaken by v3-beta. This release is tagging the branch fix/v2-release-fix w/o a PR required

Full Changelog: v2.2.1...v2.2.3