Bump urllib3 from 1.26.15 to 2.0.5 in /stix_shifter

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.15 to 2.0.5.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@1.26.15...v2.0.5)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

stix_shifter/requirements.txt

@@ -17,5 +17,5 @@ requests_toolbelt==0.10.1
 stix2-matcher==3.0.0
 stix2-patterns==1.3.2
 xmltodict==0.13.0
-urllib3==1.26.15
+urllib3==2.0.5
 regex==2023.8.8