Add support for reading Carpet pre-2012

In very old versions of Carpet, the type of All Parameters was not
string, leading to failures when reading such files. This commit ensures
that "All Parameters" is always interpreted as a string

NEWS.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## Version 1.5.1 
+
+#### Bug fixes
+
+- Add support to ready HDF5 files created with very old versions of Carpet (<
+  2012).
+
 ## Version 1.5.0 (19 June 2024)
 
 #### General

kuibit/cactus_grid_functions.py

@@ -1199,7 +1199,10 @@ def _are_ghostzones_in_file(path: str, is_3D_file: bool) -> bool:
             with h5py.File(path, "r") as file_:
                 parameters = file_["Parameters and Global Attributes"]
                 all_pars = (
-                    parameters["All Parameters"][()].decode().split("\n")
+                    parameters["All Parameters"][()]
+                    .tostring()
+                    .decode()
+                    .split("\n")
                 )
                 # We make sure that everything is lowercase, we are case insensitive
                 iohdf5_pars = [