Suppress some flake8 false positives

Author: cottsay

colcon_ansi_colors_example/output_style/catkin_tools.py

@@ -33,7 +33,7 @@ def _combine(first, second):
             return second
         first = first[2:-1]
         second = second[2:-1]
-        return f'{first};{second}'
+        return f'{first};{second}'  # noqa: E231, E702
 
 
 AnsiEscape.Black = AnsiEscape(30)