Merge pull request #2050 from CentreForDigitalHumanities/dependabot/pip/backend/pygments-2.20.0

Bump pygments from 2.19.2 to 2.20.0 in /backend

Author: lukavdplas

backend/requirements.txt

@@ -159,7 +159,7 @@ psycopg2==2.9.10
     # via -r requirements.in
 pycparser==2.23
     # via cffi
-pygments==2.19.2
+pygments==2.20.0
     # via pytest
 pyjwt[crypto]==2.10.1
     # via django-allauth