[stanekjiri]

Rebased version of #92, which resolves the merge conflict that was blocking it.
The original commit is authored by @LukasRada and preserved as-is through the rebase.

Summary

Removes the direct urllib3<2.0.0 constraint from pyproject.toml.

• The pin was a workaround for boto/botocore#2926, which is resolved and closed.
• botocore declares its own constraint — urllib3>=1.25.4,<3,!=2.2.0 as of 1.43.109 — so the compatible range is already enforced transitively.
• kbcstorage does not import urllib3 anywhere; HTTP goes through requests, and retry_requests.py implements its own retry loop rather than using urllib3.util.Retry. The pin is a phantom dependency.
• As a hard constraint in published metadata it propagates to every consumer, blocking downstream projects from resolving urllib3 2.x and the packages that depend on it.

Conflict resolution

1164636 ("default to key-pair login for snowflake workspaces") added cryptography
on the line directly above the urllib3 pin, which is what put #92 into conflict.

Resolved exactly as requested in #92: kept cryptography, dropped the urllib3 line.
The result is a one-line diff against current master.

Closes #91
Supersedes #92

[stanekjiri]

@jirkasemmler cc