Update build.yml

Author: gulp79

.github/workflows/build.yml

@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ['3.9']
+        python-version: ['3.13']
 
     steps:
     - name: Checkout repository