build(deps): bump urllib3 from 2.5.0 to 2.6.3

Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.5.0 to 2.6.3.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@2.5.0...2.6.3)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-version: 2.6.3
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

doc-requirements.txt

@@ -187,7 +187,7 @@ toolz==0.12.1
     #   partd
 tornado==6.5.1
     # via distributed
-urllib3==2.5.0
+urllib3==2.6.3
     # via
     #   distributed
     #   requests

test-requirements.txt

@@ -195,7 +195,7 @@ typing-extensions==4.12.2
     #   flexparser
     #   pint
     #   pydantic
-urllib3==2.5.0
+urllib3==2.6.3
     # via distributed
 wrapt==1.16.0
     # via deprecated