change build versions

Author: tomvanmele

.github/workflows/build.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         os: [macos-latest, windows-latest, ubuntu-latest]
-        python: ["3.9", "3.10", "3.11"]
+        python: ["3.10", "3.11", "3.12"]
 
     steps:
       - uses: compas-dev/compas-actions.build@v4