Add types-dateparser to dev deps

[sobolevn]

Adds https://pypi.org/project/types-dateparser to dev deps.
We are working on [email protected] which in the future will not include types-dateparser by default as it does now.

See python/mypy#18372

Proactively fixing projects that are affected by it :)

Checklist

• This pull request references any related issue by including "closes <link to issue>"
  • If no issue exists and your change is not a small fix, please create an issue first.
• If this pull request adds new functionality, it includes unit tests that cover the changes
• If this pull request removes docs files, it includes redirect settings in mint.json.
• If this pull request adds functions or classes, it includes helpful docstrings.

[codspeed-hq]

CodSpeed Performance Report

Merging #17212 will not alter performance

_{Comparing sobolevn:types-dateparser (5ee69fc) with main (b5f68ba)}

Summary

✅ 2 untouched benchmarks

[desertaxle]

Thanks @sobolevn!