Bump flake8 to >5 and update colorization

Author: bskinn

requirements-flake8.txt

@@ -1,11 +1,10 @@
 colorama
-flake8>=3.7
+flake8>=5
 flake8-2020
 flake8-absolute-import
 flake8-bandit
 flake8-bugbear
 flake8-builtins
-flake8-colors
 flake8-comprehensions
 flake8-docstrings>=1.3.1
 flake8-eradicate

tox.ini

@@ -124,7 +124,7 @@ exclude =
 ignore = W503
 show_source = True
 max_line_length = 88
-format = ${cyan}%(path)s${reset}:${yellow}%(row)d${reset}:${green}%(col)d${reset} ${red}(%(code)s)${reset} %(text)s
+format = %(cyan)s%(path)s%(reset)s:%(yellow)s%(row)d%(reset)s:%(green)s%(col)d%(reset)s %(red)s(%(code)s)%(reset)s %(text)s
 rst-roles =
     attr,
     class,