Bump urllib3 from 1.26.14 to 1.26.18

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.14 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@1.26.14...1.26.18)

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

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

requirements.txt

@@ -7,4 +7,4 @@ python-dateutil==2.8.2
 s3transfer==0.6.0
 six==1.16.0
 terraform-local==0.6
-urllib3==1.26.14
+urllib3==1.26.18