build(deps): update urllib3 requirement from >=2.6.0 to >=2.6.3

Updates the requirements on [urllib3](https://github.com/urllib3/urllib3) to permit the latest version.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@2.6.0...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]

pyproject.toml

@@ -26,7 +26,7 @@ dependencies = [
     "rich>=14.0.0",
     "scapy>=2.6.1; python_version < '4'",
     "setuptools>=82.0.0",
-    "urllib3>=2.6.0",  # pinned by Snyk to avoid a vulnerability
+    "urllib3>=2.6.3",  # pinned by Snyk to avoid a vulnerability
 ]
 
 [project.urls]