Drop Python versions below 3.11 and add 3.14.0

Co-authored-by: puddly <32534428+puddly@users.noreply.github.com>

Author: Copilot

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ on:
       PYTHON_VERSION_DEFAULT:
         description: Default Python version
         required: false
-        default: 3.9.15
+        default: 3.11.0
         type: string
       PRE_COMMIT_CACHE_PATH:
         description: Pre-commit cache path
@@ -31,7 +31,7 @@ on:
         type: string
       PYTHON_MATRIX:
         description: 'Comma-separated list of Python versions e.g. "3.11","3.12"'
-        default: '"3.9.15", "3.10.8", "3.11.0", "3.12.9", "3.13.2"'
+        default: '"3.11.0", "3.12.9", "3.13.2", "3.14.0"'
         required: false
         type: string
 

.github/workflows/publish-to-pypi.yml

@@ -7,7 +7,7 @@ on:
       PYTHON_VERSION_DEFAULT:
         description: Default Python version
         required: false
-        default: "3.9"
+        default: "3.11"
         type: string
 
     secrets: