prefect: 3.3.5 -> 3.4.0 (#404688)

pkgs/by-name/pr/prefect/package.nix

···
 
 python3Packages.buildPythonApplication rec {
   pname = "prefect";
-  version = "3.3.5";
+  version = "3.4.0";
   pyproject = true;
 
   # Trying to install from source is challenging
···
   # Source will be missing sdist, uv.lock, ui artefacts ...
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-L5L1ldEpOHJPE9K8UPvpUZlF/85mm5llN912LIlvs9k=";
+    hash = "sha256-uguh6sOIy0mOASFsw8ADb8vpmQm7S+t4ZS/6MFFYiic=";
   };
 
   pythonRelaxDeps = [