Release 2.1.1

[nrbgt]

• on master
  • merge all outstanding PRs
    • Postmortem for 2.1.0 (preflight for 2.1.1) #134
  • ensure CHANGELOG.md is up-to-date
  • ensure the versions have been bumped
  • validate on ReadTheDocs
    • https://ipyelk--134.org.readthedocs.build/en/134/
• wait for a successful build of master
  • https://github.com/jupyrdf/ipyelk/actions/runs/11618958113
• download the dist archive and unpack somewhere
• create a new release through the GitHub UI
  • pick a new release name to go with the version of real (or imaginary) deer
    • Hydropotes inermis
  • paste in the relevant CHANGELOG.md entries
  • upload the artifacts
  • upload distribution to package repositories

    cd dist
    twine upload *.tar.gz *.whl
    npm login
    npm publish jupyrdf-jupyter-elk-$VERSION.tgz
    npm logout

    • https://www.npmjs.com/package/@jupyrdf/jupyter-elk/v/2.1.1
    • https://pypi.org/project/ipyelk/2.1.1/
• postmortem
  • handle conda-forge feedstock tasks
    • ipyelk 2.1.1 conda-forge/ipyelk-feedstock#11
    • https://anaconda.org/conda-forge/ipyelk/files?version=2.1.1
  • create postmortem PR
    • Postmortem 2.1.1 #136
    • bump to next development version
    • bump the CACHE_EPOCH
    • rebuild locks
      • rm pixi.lock yarn.lock
      • pixi r release
      • commit the new locks