urllib3 1.25 and below does not work with this library

[99littlebugs]

Describe the bug
urllib3 < 1.26.0 does not work with this library even though pyproject.toml allows urllib3 = ">=1.22.0,<3"

To reproduce

1. Use launchdarkly-server-sdk version 9.2.0 and launchdarkly-eventsource version 1.1.0, along with urllib3 version 1.25.10
2. When trying to evaluate flags (with streaming turned on), continually get the error Unexpected error on stream connection: __init__() got an unexpected keyword argument 'other', will retry

Expected behavior
No errors and the ability to evaluate flags.

Logs
If applicable, add any log output related to your problem.

SDK version
launchdarkly-server-sdk version 9.2.0 and launchdarkly-eventsource version 1.1.0

Language version, developer tools
Python 3.8.18

OS/platform
N/A

Additional context
Tracing the errors, we've found that this library used the urllib3 retry object here and is passing in other as an argument. urllib3 doesn't support the other keyword prior to 1.26.0 (see MR)

[keelerm84]

Thank you for bringing this to our attention. I have a PR up now and will let you know once a fix has been released.