Bump urllib3 from 1.26.8 to 1.26.18 (#198)

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.8 to 1.26.18.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@1.26.8...1.26.18)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -12,7 +12,7 @@ sh==1.14.2
 pytest==6.2.5
 pylint==2.12.2
 osfclient==0.0.5
-urllib3==1.26.8
+urllib3==1.26.18
 rich==11.0.0
 pyyaml
 mock==4.0.3