Bump urllib3 from 1.26.4 to 1.26.5 in /perf-tests (#1634)

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.4 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@1.26.4...1.26.5)

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

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

perf-tests/requirements.txt

@@ -5,7 +5,7 @@ pytest==4.4.1
 ipaddress==1.0.23 # >= 1.0.17
 cffi==1.14.5
 certifi==2020.12.5
-urllib3==1.26.4
+urllib3==1.26.5
 pytest-html==3.1.1
 pytest-repeat==0.9.1
 locust==1.4.4