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] <[email protected]>

requirements.txt

@@ -2,7 +2,7 @@ click==8.0.4
 colorlog==6.7.0
 python-consul>=0.7.1
 requests==2.27.1
-urllib3==1.26.16
+urllib3==1.26.18
 retrying==1.3.4
 holidays>=0.9.8
 git+https://github.com/syseleven/consul_lib.git#egg=consul_lib