flake8: Update max line length from 80 to 120

Author: jcfr

Diff for: setup.cfg

@@ -2,7 +2,7 @@
 test = pytest
 
 [flake8]
-max-line-length: 80
+max-line-length: 120
 # Whether to display the pep8 instructions on failure (can be quite verbose)
 show-pep8: False
 # Whether to show source code for each failure