Remove the upper bound for urllib3 dependency

[nikitagrygoriev]

urllib3 is currently pinned at >= 1.25.3, < 2.1.0 in setup.py and requirements.txt. I was not able to find any reason to forbid using newer versions of urllib3 (unless somebody is using versions of Python that are no longer maintained – 3.7 or 3.8). Just specifying the lower bound (or at least making the upper bound less restrictive, e.g. < 3) should be sufficient.

[Nick-S-2018]

Yes, this looks reasonable. We will check the client templates to ensure the change doesn't affect anything else there and will update the client.

[Nick-S-2018]

Done in d863dc7

[nikitagrygoriev]

@Nick-S-2018 I was wondering if you could share any information about when the next release is planned?

[Nick-S-2018]

We're actually going to publish it in the next few days.