Enable Python 3.14 by updating to pillow 11.3.X and adding 3.14 to CI (#2777)

* Add Python 3.14 to self-hosted CI runner workflow

* Bump pillow to 11.3.0 to try beta Python 3.14 support

Author: pushfoo

.github/workflows/selfhosted_runner.yml

@@ -18,7 +18,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.10', '3.11', '3.12', '3.13']
+        python-version: ['3.10', '3.11', '3.12', '3.13', '3.14']
         architecture: ['x64']
 
     steps:

pyproject.toml

@@ -20,7 +20,7 @@ classifiers = [
 ]
 dependencies = [
     "pyglet~=2.1.5",
-    "pillow~=11.0.0",
+    "pillow~=11.3.0",
     "pymunk~=6.9.0",
     "pytiled-parser~=2.2.9",
 ]