Bump pipenv from 2018.11.26 to 2022.1.8

Bumps [pipenv](https://github.com/pypa/pipenv) from 2018.11.26 to 2022.1.8.
- [Release notes](https://github.com/pypa/pipenv/releases)
- [Changelog](https://github.com/pypa/pipenv/blob/main/CHANGELOG.rst)
- [Commits](pypa/pipenv@v2018.11.26...v2022.1.8)

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

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

Author: dependabot[bot]

requirements.txt

@@ -61,7 +61,7 @@ pbr==5.4.4
 pep8==1.7.1
 pexpect==4.7.0
 pickleshare==0.7.5
-pipenv==2018.11.26
+pipenv==2022.1.8
 pluggy==0.6.0
 prometheus-client==0.7.1
 prompt-toolkit==3.0.2