Removes testpypi as a target for the workflow-dispatch-triggered release workflow.#3822

d-v-b merged 2 commits intozarr-developers:mainzarr-developers/zarr-python:mainfrom

d-v-b:chore/fix-explicit-pypi-publishd-v-b/zarr-python:chore/fix-explicit-pypi-publishCopy head branch name to clipboard