fix: Add type hint

[sjrl]

Related Issues

• fixes failing mypy test in haystack main CI (e.g. https://github.com/deepset-ai/haystack/actions/runs/18643827377/job/53147458172#step:6:57)

Proposed Changes:

Adds type hint to a kwargs dict so mypy no longer complains. Arrow had a new release 2 days ago https://pypi.org/project/arrow/1.4.0/ but I can't immediately tell if that change caused this issue.

How did you test it?

Notes for the reviewer

Checklist

• I have read the contributors guidelines and the code of conduct
• I have updated the related issue with new insights and changes
• I added unit tests and updated the docstrings
• I've used one of the conventional commit types for my PR title: fix:, feat:, build:, chore:, ci:, docs:, style:, refactor:, perf:, test: and added ! in case the PR includes breaking changes.
• I documented my code
• I ran pre-commit hooks and fixed any issue

[coveralls]

Pull Request Test Coverage Report for Build 18644271339

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 92.2%

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Totals
Change from base Build 18643827377:	0.0%
Covered Lines:	13346
Relevant Lines:	14475

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💛 - Coveralls

[anakin87]

Thanks!