Bump urllib3 from 1.26.16 to 1.26.18

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.16 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@1.26.16...1.26.18)

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

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

requirements.txt

@@ -10,4 +10,4 @@ PyYAML==6.0.1
 s3transfer==0.6.2
 schema==0.7.5
 six==1.16.0
-urllib3==1.26.16
+urllib3==1.26.18