luigi: fix(?) typing issue when using tqdm while reading csv file
For some reason, I have to explicitly cast the row iterator otherwise I get a:
swh/graph/luigi/blobs_datasets.py:279: error: Incompatible types in assignment (expression has type "tqdm[list[str]]", variable has type "_reader") [assignment]
with:
- tqdm 4.66.1 and 4.66.4
- types-tqdm 4.66.0.20240417
- mypy 1.8.0 and 1.10.1