use python 3.11 for now

Author: jswhit

.github/workflows/build.yml

@@ -9,7 +9,7 @@ jobs:
       PROJ_LIB: /usr/share/proj
     strategy:
       matrix:
-        python-version: ["3.12"]
+        python-version: ["3.11"]
     steps:
 
     - uses: actions/checkout@v4