Bump urllib3 from 1.21.1 to 1.26.5 in /068

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.21.1 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@1.21.1...1.26.5)

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

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

Author: dependabot[bot]

068/requirements.txt

@@ -4,4 +4,4 @@ certifi==2017.4.17
 chardet==3.0.3
 idna==2.5
 requests==2.17.3
-urllib3==1.21.1
+urllib3==1.26.5