Bump the upper bound for Flake8 dependency to <5.0

docs/source/tutorial/tutorial_template.md

@@ -24,7 +24,7 @@ The generic project template bundles some typical dependencies, in `src/requirem
 
 ```text
 black==22.1.0 # Used for formatting code with `kedro lint`
-flake8>=3.7.9, <4.0 # Used for linting code with `kedro lint`
+flake8>=3.7.9, <5.0 # Used for linting code with `kedro lint`
 ipython==7.0 # Used for an IPython session with `kedro ipython`
 isort~=5.0 # Used for linting code with `kedro lint`
 jupyter~=1.0 # Used to open a Kedro-session in Jupyter Notebook & Lab

features/steps/test_starter/{{ cookiecutter.repo_name }}/src/requirements.txt

@@ -1,5 +1,5 @@
 black~=22.0
-flake8>=3.7.9, <4.0
+flake8>=3.7.9, <5.0
 ipython>=7.31.1, <8.0
 isort~=5.0
 jupyter~=1.0

kedro/templates/project/{{ cookiecutter.repo_name }}/src/requirements.txt

@@ -1,5 +1,5 @@
 black~=22.0
-flake8>=3.7.9, <4.0
+flake8>=3.7.9, <5.0
 ipython>=7.31.1, <8.0
 isort~=5.0
 jupyter~=1.0

requirements.txt

@@ -5,7 +5,7 @@ cookiecutter~=1.7.0
 dynaconf>=3.1.2,<4.0.0
 fsspec>=2021.4, <=2022.1
 gitpython~=3.0
-importlib_metadata>=4.4 # Compatible with Python 3.10 importlib.metadata
+importlib_metadata>=3.6; python_version < '3.10' # The "selectable" entry points were introduced in `importlib_metadata` 3.6 and Python 3.10.
 jmespath>=0.9.5, <1.0
 pip-tools~=6.5
 pluggy~=1.0.0