python3Packages.rtree: raise minimal python version to 3.9

Co-authored-by: Nick Cao <[email protected]>

Author: imincik

pkgs/development/python-modules/rtree/default.nix

@@ -16,7 +16,7 @@ buildPythonPackage rec {
   version = "1.4.0";
   pyproject = true;
 
-  disabled = pythonOlder "3.8";
+  disabled = pythonOlder "3.9";
 
   src = fetchFromGitHub {
     owner = "Toblerity";