Re-enable PySide6 & Pygame for Python 3.13 in CI

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ on:
 
 # Cancel active CI runs for a PR before starting another run
 concurrency:
-  group: ${{ github.ref }}
+  group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
 defaults:
@@ -40,12 +40,3 @@ jobs:
       matrix:
         python-version: [ "3.9", "3.10", "3.11", "3.12", "3.13-dev" ]
         framework: [ "toga", "pyside6", "pygame", "console" ]
-
-        exclude:
-          # PySide6 hasn't published 3.13 wheels.
-          - python-version: "3.13-dev"
-            framework: "pyside6"
-
-          # Pygame hasn't published 3.13 wheels.
-          - python-version: "3.13-dev"
-            framework: "pygame"