Bump urllib3 in /elkserver/docker/redelk-base/redelkinstalldata/scripts

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.17 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@1.26.17...1.26.18)

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

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

elkserver/docker/redelk-base/redelkinstalldata/scripts/requirements.txt

@@ -4,4 +4,4 @@ json2html==1.3.0
 pymsteams==0.1.14
 python-dateutil==2.8.2
 slack_sdk==3.13.0
-urllib3==1.26.17
+urllib3==1.26.18