Bump urllib3 from 1.25.9 to 1.26.5 in /housekeeping/testing (#22)

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.25.9 to 1.26.5.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@1.25.9...1.26.5)

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

Signed-off-by: dependabot[bot] <[email protected]>

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

housekeeping/testing/requirements.txt

@@ -11,5 +11,5 @@ pytz==2020.1
 requests==2.23.0
 six==1.14.0
 tqdm==4.46.0
-urllib3==1.25.9
+urllib3==1.26.5
 websockets==8.1