Add support for Python 3.14.

Updated tox.ini and GitHub actions to include compatibility testing for Python 3.14 with Django 5.1. This ensures our codebase remains functional with the latest Python version.

README.rst

@@ -79,39 +79,39 @@ Django versions Python versions
 4.1             3.8, 3.9, 3.10, 3.11
 4.2             3.8, 3.9, 3.10, 3.11, 3.12
 5.0             3.10, 3.11, 3.12, 3.13
-5.1             3.10, 3.11, 3.12, 3.13
+5.1             3.10, 3.11, 3.12, 3.13, 3.14
 
 =============== ========================
 
 * Python 3.11 only works with Django 4.1.3+
 
-
 All library versions to use for old Django/Python support
 ---------------------------------------------------------
 
-=============== ======================== ==================
-Django versions Python versions          Library versions
-=============== ======================== ==================
-1.4, 1.5        2.6, 2.7                    1.2
-1.6             2.6, 2.7, 3.2, 3.3          1.2
-1.7             2.7, 3.2, 3.3, 3.4          1.2
-1.8             2.7, 3.2, 3.3, 3.4, 3.5     1.3
-1.9, 1.10       2.7, 3.4, 3.5               1.3
-1.11            2.7, 3.4, 3.5, 3.6          1.4.x (>=1.4.1,<2)
-2.0             3.4, 3.5, 3.6, 3.7          3.0
-2.1             3.5, 3.6, 3.7               3.0
-2.2             3.5, 3.6, 3.7, 3.8, 3.9     3.0
-3.0             3.6, 3.7, 3.8, 3.9          3.0
-3.1             3.6, 3.7, 3.8, 3.9          3.0
-3.2             3.6, 3.7, 3.8, 3.9, 3.10    3.0
-4.0             3.8, 3.9, 3.10              3.0
-4.1             3.8, 3.9, 3.10              3.0
-4.2             3.10, 3.11, 3.12            3.0
-4.2             3.10, 3.11, 3.12            3.0
-5.0             3.10, 3.11, 3.12, 3.13      3.0
-5.1             3.10, 3.11, 3.12, 3.13      3.0
-=============== ======================== ==================
-
+=============== =============================== ==================
+Django versions Python versions                  Library versions
+=============== =============================== ==================
+1.4, 1.5        2.6, 2.7                         1.2
+1.6             2.6, 2.7, 3.2, 3.3               1.2
+1.7             2.7, 3.2, 3.3, 3.4               1.2
+1.8             2.7, 3.2, 3.3, 3.4, 3.5          1.3
+1.9, 1.10       2.7, 3.4, 3.5                    1.3
+1.11            2.7, 3.4, 3.5, 3.6               1.4.x (>=1.4.1,<2)
+2.0             3.4, 3.5, 3.6, 3.7               3.0
+2.1             3.5, 3.6, 3.7                    3.0
+2.2             3.5, 3.6, 3.7, 3.8, 3.9          3.0
+3.0             3.6, 3.7, 3.8, 3.9               3.0
+3.1             3.6, 3.7, 3.8, 3.9               3.0
+3.2             3.6, 3.7, 3.8, 3.9, 3.10         3.0
+4.0             3.8, 3.9, 3.10                   3.1
+4.1             3.8, 3.9, 3.10                   3.1
+4.2             3.10, 3.11, 3.12                 3.1
+4.2             3.10, 3.11, 3.12                 3.1
+5.0             3.10, 3.11, 3.12, 3.13           3.1
+5.1             3.10, 3.11, 3.12, 3.13, 3.14     3.1.x
+=============== =============================== ==================
+
+Python 3.14 flagged as supported added in 3.1.1
 
 Development
 -----------