Upgrade support django5.2 and drop django5.0 (#139)

Author: nibuno

pyproject.toml

@@ -59,8 +59,8 @@ legacy_tox_ini = """
     # https://docs.djangoproject.com/en/5.1/faq/install/#what-python-version-can-i-use-with-django
     env_list =
         django{42}-py{39,310,311,312}-sendgrid{5,6}
-        django{5}-py{310,311,312}-sendgrid{5,6}
         django{51}-py{310,311,312,313}-sendgrid{5,6}
+        django{52}-py{310,311,312,313}-sendgrid{5,6}
 
     [gh]
     python =
@@ -73,8 +73,8 @@ legacy_tox_ini = """
     [testenv]
     deps =
         django42: Django>=4.2,<4.3
-        django5: Django>=5.0,<5.1
         django51: Django>=5.1,<5.2
+        django52: Django>=5.2,<5.3
         sendgrid5: sendgrid>=5,<6
         sendgrid6: sendgrid>=6,<7
         starkbank-ecdsa
@@ -85,4 +85,4 @@ legacy_tox_ini = """
     pass_env =
         SENDGRID_API_KEY
         TESTING_SENDGRID_EU_API_KEY
-"""
+"""