add official Django 5.1 support (#1540)

Author: GeyseR

Diff for: .github/workflows/tests.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        django: ["3.2", "4.2", "5.0"]
+        django: ["3.2", "4.2", "5.0", "5.1"]
         python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
         exclude:
           - django: "3.2"
@@ -23,6 +23,10 @@ jobs:
             python-version: "3.8"
           - django: "5.0"
             python-version: "3.9"
+          - django: "5.1"
+            python-version: "3.8"
+          - django: "5.1"
+            python-version: "3.9"
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}

Diff for: tox.ini

@@ -2,8 +2,7 @@
 envlist =
     py{38,39,310}-django32
     py{38,39}-django42
-    py{310,311}-django{42,50,main}
-    py312-django{42,50,main}
+    py{310,311,312}-django{42,50,51,main}
     pre-commit
 
 [gh-actions]
@@ -19,6 +18,7 @@ DJANGO =
     3.2: django32
     4.2: django42
     5.0: django50
+    5.1: django51
     main: djangomain
 
 [testenv]
@@ -33,6 +33,7 @@ deps =
     django32: Django>=3.2,<4.0
     django42: Django>=4.2,<4.3
     django50: Django>=5.0,<5.1
+    django51: Django>=5.1,<5.2
     djangomain: https://github.com/django/django/archive/main.zip
 commands = {posargs:pytest --cov=graphene_django graphene_django examples}