Fix "include" usage in test matrix

If the entry is already a part of the matrix, "include" is redundant

Author: ulgens

.github/workflows/test.yml

@@ -51,7 +51,7 @@ jobs:
       fail-fast: false
       max-parallel: 6
       matrix:
-        python-version: ["3.11", "3.12", "3.13",  "3.14",  "3.14t"]
+        python-version: ["3.11", "3.12", "3.13",  "3.14"]
         django-version: ["5.0", "5.1", "5.2"]
         broker: ["redis", "fakeredis", "valkey"]
         include: