Merge branch 'renovate/pycparser-2.x' into 'main'

Update dependency pycparser to v2.21

See merge request !600

requirements.txt

@@ -72,7 +72,7 @@ pyasn1==0.4.8
     #   rsa
 pyasn1-modules==0.2.8
     # via google-auth
-pycparser==2.20
+pycparser==2.21
     # via cffi
 pynacl==1.4.0
     # via paramiko