Add django 5.1 and 5.2 to tox

Author: bgaudino

tox.ini

@@ -2,8 +2,9 @@
 envlist=
     py37-dj{22,30,32,32}
     py{38,39}-dj{22,30,31,32,40,41,42}
-    py{10}-dj{32,40,41,42,50}
-    py{11,12}-dj{42,50}
+    py{10}-dj{32,40,41,42,50,51,52}
+    py{11,12}-dj{42,50,51,52}
+    py313-dj{51,52}
 [testenv]
 python=
   py37: python3.7
@@ -12,6 +13,7 @@ python=
   py310: python3.10
   py311: python3.11
   py312: python3.12
+  py313: python3.13
 commands=
   /usr/bin/env
   make test
@@ -24,6 +26,8 @@ deps=
   dj41: Django>=4.1,<4.2
   dj42: Django>=4.2,<4.3
   dj50: Django>=5.0,<5.1
+  dj51: Django>=5.1,<5.2
+  dj52: Django>=5.2,<5.3
 whitelist_externals=
   env
   make