pre-commit, tox: Bump pre-commit, codespell, black and flake8

- pre-commit from 4.1.0 to 4.3.0,
- codespell from 2.2.1 to 2.2.2,
- black from 22.3.0 to 22.10.0 and
- flake8 from 4.0.1 to 5.0.4. Also freeze flake8 dependencies.

Also change flake8's repo config to github (the gitlab mirror
being outdated).

tox.ini

@@ -19,15 +19,16 @@ commands =
 [testenv:black]
 skip_install = true
 deps =
-  black==22.3.0
+  black==22.10.0
 commands =
   {envpython} -m black --check swh
 
 [testenv:flake8]
 skip_install = true
 deps =
-  flake8==4.0.1
-  flake8-bugbear==22.3.23
+  flake8==5.0.4
+  flake8-bugbear==22.9.23
+  pycodestyle==2.9.1
 commands =
   {envpython} -m flake8