Bump pyjwt from 1.7.1 to 2.4.0

Bumps [pyjwt](https://github.com/jpadilla/pyjwt) from 1.7.1 to 2.4.0.
- [Release notes](https://github.com/jpadilla/pyjwt/releases)
- [Changelog](https://github.com/jpadilla/pyjwt/blob/master/CHANGELOG.rst)
- [Commits](jpadilla/pyjwt@1.7.1...2.4.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -33,7 +33,7 @@ py==1.7.0
 pyasn1==0.4.5
 pyasn1-modules==0.2.3
 pycparser==2.19
-PyJWT==1.7.1
+PyJWT==2.4.0
 pylint==2.2.2
 pymongo==3.6.0
 pytest==4.0.2