Upgrade urllib3 dependency to 2.6.3 (#520)

## Summary
This pull request updates the urllib3 dependency to version 2.6.3 across
the project's dependency specifications.

## Changes
- Updated urllib3 version constraint in `pyproject.toml` from `^2.6.2`
to `^2.6.3`
- Updated urllib3 pinned version in `requirements.txt` from `2.6.2` to
`2.6.3`

## Notes
This is a patch-level version bump that maintains compatibility with the
existing caret constraint in pyproject.toml. The lockfile has been
updated accordingly to reflect the new dependency resolution.

https://claude.ai/code/session_019Hrc2h44LQ6HbC5m2tatZr

Co-authored-by: Claude <noreply@anthropic.com>

Author: naomi-robusta

poetry.lock

@@ -37,7 +37,7 @@ requests = ">2.32.4"
 pyyaml = "6.0.1"
 typing-extensions = "4.6.0"
 idna = "3.7"
-urllib3 = "^2.6.2"
+urllib3 = "^2.6.3"
 setuptools = "^80.9.0"
 zipp = "^3.19.1"
 tenacity = "^9.0.0"

pyproject.toml

@@ -50,7 +50,7 @@ typer==0.7.0 ; python_version >= "3.10" and python_full_version < "3.13"
 typing-extensions==4.6.0 ; python_version >= "3.10" and python_full_version < "3.13"
 tzdata==2024.1 ; python_version >= "3.10" and python_full_version < "3.13"
 tzlocal==5.2 ; python_version >= "3.10" and python_full_version < "3.13"
-urllib3==2.6.2 ; python_version >= "3.10" and python_full_version < "3.13"
+urllib3==2.6.3 ; python_version >= "3.10" and python_full_version < "3.13"
 websocket-client==1.7.0 ; python_version >= "3.10" and python_full_version < "3.13"
 zipp==3.20.2 ; python_version >= "3.10" and python_full_version < "3.13"
 # required for tests