dev: update python lint and test dependencies

Package operations: 1 install, 18 updates, 2 removals

* Removing py (1.11.0)
* Removing toml (0.10.2)
* Updating importlib-metadata (4.11.3 -> 4.2.0)
* Updating mccabe (0.6.1 -> 0.7.0)
* Installing exceptiongroup (1.0.4)
* Updating pycodestyle (2.7.0 -> 2.9.1)
* Updating pyflakes (2.3.1 -> 2.5.0)
* Updating coverage (5.5 -> 6.5.0)
* Updating flake8 (3.9.2 -> 5.0.4)
* Updating pytest (6.2.5 -> 7.2.0)
* Updating sphinx (4.5.0 -> 4.3.2)
* Updating black (22.3.0 -> 22.12.0)
* Updating django-coverage-plugin (2.0.2 -> 3.0.0)
* Updating flake8-bugbear (21.11.29 -> 22.12.6)
* Updating flake8-builtins (1.5.3 -> 2.0.1)
* Updating flake8-comprehensions (3.8.0 -> 3.10.1)
* Updating flake8-import-order (0.18.1 -> 0.18.2)
* Updating flake8-logging-format (0.6.0 -> 0.9.0)
* Updating flake8-rst-docstrings (0.2.5 -> 0.3.0)
* Updating pytest-cov (2.12.1 -> 4.0.0)
* Updating requests-mock (1.9.3 -> 1.10.0)

Change-Id: Ida325baccca94bfc696c121e49884b9bc1462c38

.flake8

@@ -9,12 +9,14 @@ exclude =
     manage.py,
     migrations,
     node_modules
-format = grouped
+format = pylint
 max-line-length = 79
 show-source = true
 flake8-import-order = appnexus
 select = E,F,W,C90,D,R,B,B9
 extend-ignore =
+    # needs python >=3.10; `zip()` without an explicit `strict=` parameter.
+    B905,
     # disable all "convention" rules
     C*,
     # missing-docstring-in-public-module
@@ -50,3 +52,5 @@ extend-ignore =
 per-file-ignores =
     # missing docstring in public package
    __init__.py:  D104
+   # line too long
+   settings.py: B950