Refresh flake8 dependencies

Author: mdmintz

requirements.txt

@@ -123,9 +123,9 @@ coverage==6.4.2;python_version>="3.7"
 pytest-cov==2.12.1;python_version<"3.6"
 pytest-cov==3.0.0;python_version>="3.6"
 flake8==3.7.9;python_version<"3.6"
-flake8==4.0.1;python_version>="3.6"
-mccabe==0.6.1
+flake8==5.0.2;python_version>="3.6"
+mccabe==0.7.0
 pyflakes==2.1.1;python_version<"3.6"
-pyflakes==2.4.0;python_version>="3.6"
+pyflakes==2.5.0;python_version>="3.6"
 pycodestyle==2.5.0;python_version<"3.6"
-pycodestyle==2.8.0;python_version>="3.6"
+pycodestyle==2.9.0;python_version>="3.6"

setup.py

@@ -253,12 +253,12 @@
         # Usage: flake8
         "flake": [
             'flake8==3.7.9;python_version<"3.6"',
-            'flake8==4.0.1;python_version>="3.6"',
-            "mccabe==0.6.1",
+            'flake8==5.0.2;python_version>="3.6"',
+            "mccabe==0.7.0",
             'pyflakes==2.1.1;python_version<"3.6"',
-            'pyflakes==2.4.0;python_version>="3.6"',
+            'pyflakes==2.5.0;python_version>="3.6"',
             'pycodestyle==2.5.0;python_version<"3.6"',
-            'pycodestyle==2.8.0;python_version>="3.6"',
+            'pycodestyle==2.9.0;python_version>="3.6"',
         ],
         # pip install -e .[pdfminer]
         "pdfminer": [