cli: renku dataset tag dataset-name dataset- [...]

[bethcg]

Describe the bug

I was working with tags for datasets, and wanted to overwrite an already existing tag (the goal was to change the tag's description by using the following command:
renku dataset tag dataset-name dataset-tag -f -d 'This is a short description'

Details

The automatically created bug report is as follows:

Renku version: 2.4.1rc1
OS: Darwin (Darwin Kernel Version 22.1.0: Sun Oct 9 20:19:12 PDT 2022; root:xnu-8792.41.9~3/RELEASE_ARM64_T6020)
Python: 3.9.6

Traceback

Traceback (most recent call last):
  File "[...]/renku/command/command_builder/database.py", line 110, in _post_hook
    project_context.pop_context()
  File "[...]/renku/domain_model/project_context.py", line 247, in pop_context
    self._top.database.commit()
  File "[...]/renku/infrastructure/database.py", line 459, in commit
    self._store_object(object)
  File "[...]/renku/infrastructure/database.py", line 466, in _store_object
    self._cache[object._p_oid] = object
  File "[...]/renku/infrastructure/database.py", line 532, in __setitem__
    raise ValueError(f"The same oid exists: {existing_data} != {object}")
ValueError: The same oid exists: <renku.domain_model.dataset.DatasetTag object at 0x1073c92e0 oid '9ad0666be7e40f11eceec79a004d2364cea7ab9a735bca66e72db03d6f893437' in <renku.infrastructure.database.Database object at 0x1073a8160>> != <renku.domain_model.dataset.DatasetTag object at 0x1073c93c0 oid '9ad0666be7e40f11eceec79a004d2364cea7ab9a735bca66e72db03d6f893437' in <renku.infrastructure.database.Database object at 0x1073a8160>>

Additional context

Add any other context about the problem.