HBASE-28169 Bump urllib3 in /dev-support/git-jira-release-audit (#5465)

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

dev-support/git-jira-release-audit/requirements.txt

@@ -35,5 +35,5 @@ requests-oauthlib==1.3.0
 requests-toolbelt==0.9.1
 six==1.14.0
 smmap2==2.0.5
-urllib3==1.26.17
+urllib3==1.26.18
 wcwidth==0.1.8