Add Django 4.0 to tox.ini, bump other dependencies

.pre-commit-config.yaml

@@ -12,16 +12,16 @@ repos:
     - id: check-json
 
 - repo: https://github.com/pycqa/isort
-  rev: 5.9.3
+  rev: 5.10.1
   hooks:
     - id: isort
 
 - repo: https://github.com/psf/black
-  rev: 21.7b0
+  rev: 21.12b0
   hooks:
     - id: black
 
 - repo: https://github.com/pycqa/flake8
-  rev: 3.9.2
+  rev: 4.0.1
   hooks:
     - id: flake8

coverage.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" ?>
-<coverage version="5.5" timestamp="1627598128863" lines-valid="737" lines-covered="552" line-rate="0.749" branches-valid="144" branches-covered="56" branch-rate="0.3889" complexity="0">
+<coverage version="5.5" timestamp="1639263030947" lines-valid="737" lines-covered="552" line-rate="0.749" branches-valid="144" branches-covered="56" branch-rate="0.3889" complexity="0">
 	<!-- Generated by coverage.py: https://coverage.readthedocs.io -->
 	<!-- Based on https://raw.githubusercontent.com/cobertura/web/master/htdocs/xml/coverage-04.dtd -->
 	<sources>

getpaid/__init__.py

@@ -1,5 +1,5 @@
 from .types import FraudStatus, PaymentStatus  # noqa
 
-__version__ = "2.3.0"
+__version__ = "2.3.1"
 
 default_app_config = "getpaid.apps.GetpaidConfig"