Dcor-shared

- reg: typo in dclab S3 instantiation

- setup: bump dclab to 0.58.6

- fix: handle case in wait_for_resource when resource is not yet in CKAN

- BREAKING CHANGE: presigned URLs for uploading resources now work
differently. For small files (< 1 GiB), a single upload URL for
PUT is created. For larger files, a multipart upload is started.
- enh: retry set_object_tagging on failure

- feat: add convenience method `get_s3_attributes_for_artifact`

- feat: introduce `testing.make_dataset_via_s3` and
`testing.make_resource_via_s3` which uploads resources via S3
- enh: make sha256 optional in `s3.upload_file`