update Pygments from 2.7.1 to 2.10.0

requirements.txt

@@ -22,7 +22,7 @@ pickleshare==0.7.5
 prompt-toolkit==3.0.7
 ptyprocess==0.6.0
 pybids==0.12.1
-Pygments==2.7.1
+Pygments==2.10.0
 pyparsing==2.4.7
 python-dateutil==2.8.1
 pytz==2020.1