Update requirements on flake8 and its dependencies (#102)

Author: ccordoba12

.github/workflows/test-linux.yml

@@ -40,6 +40,8 @@ jobs:
           /tmp/pyenv/bin/python -m pip install loghub
       - run: python -m pip install --upgrade pip setuptools
       - run: pip install -e .[all,test]
+      - name: Show test environment
+        run: pip list
       - run: pytest -v test/
       # Enable this if SSH debugging is required
       # - name: Setup tmate session

.github/workflows/test-mac.yml

@@ -40,6 +40,8 @@ jobs:
           /tmp/pyenv/bin/python -m pip install loghub
       - run: python -m pip install --upgrade pip setuptools
       - run: pip install -e .[all,test]
+      - name: Show test environment
+        run: pip list
       - run: pytest -v test/
       # Enable this if SSH debugging is required
       # - name: Setup tmate session

.github/workflows/test-win.yml

@@ -35,4 +35,6 @@ jobs:
           architecture: 'x64'
       - run: python -m pip install --upgrade pip setuptools
       - run: pip install -e .[all,test]
+      - name: Show test environment
+        run: pip list
       - run: pytest -v test/

setup.py

@@ -46,22 +46,22 @@ def get_version(module='pylsp'):
     python_requires='>=3.6',
     extras_require={
         'all': [
-            'autopep8',
-            'flake8>=3.8.0,<4.0.0',
+            'autopep8>=1.6.0,<1.7.0',
+            'flake8>=4.0.0,<4.1.0',
             'mccabe>=0.6.0,<0.7.0',
-            'pycodestyle>=2.7.0',
+            'pycodestyle>=2.8.0,<2.9.0',
             'pydocstyle>=2.0.0',
-            'pyflakes>=2.3.0,<2.4.0',
+            'pyflakes>=2.4.0,<2.5.0',
             'pylint>=2.5.0',
             'rope>=0.10.5',
             'yapf',
         ],
-        'autopep8': ['autopep8'],
-        'flake8': ['flake8>=3.8.0,<4.0.0'],
+        'autopep8': ['autopep8>=1.6.0,<1.7.0'],
+        'flake8': ['flake8>=4.0.0,<4.1.0'],
         'mccabe': ['mccabe>=0.6.0,<0.7.0'],
-        'pycodestyle': ['pycodestyle>=2.7.0'],
+        'pycodestyle': ['pycodestyle>=2.8.0,<2.9.0'],
         'pydocstyle': ['pydocstyle>=2.0.0'],
-        'pyflakes': ['pyflakes>=2.3.0,<2.4.0'],
+        'pyflakes': ['pyflakes>=2.4.0,<2.5.0'],
         'pylint': ['pylint>=2.5.0'],
         'rope': ['rope>0.10.5'],
         'yapf': ['yapf'],