Rename spack env branch names in our script

The branch names in the repo spack-environments changed to use the format releases/dev-23a and for the spack fork, it was changed to mpsd/v0.19_dev-23a (see spack-environments!36 (merged) we dont worry about that in this script ) This MR updates those changes into our source.

src/mpsd_software_manager/mpsd_software.py

@@ -393,7 +393,9 @@ def get_available_package_sets(mpsd_release: str) -> List[str]:
 
     # find package_sets by cloning repository and checking out right branch
     clone_repo(
-        tmp_dir_path, config_vars["spack_environments_repo"], branch=mpsd_release
+        tmp_dir_path,
+        config_vars["spack_environments_repo"],
+        branch=f"releases/{mpsd_release}",
     )
     # look for directories defining the package_sets
 
@@ -802,7 +804,7 @@ def prepare_environment(mpsd_release: str, root_dir: Path) -> List[str]:
     else:
         repo_url = config_vars["spack_environments_repo"]
         logging.info(f"cloning repository {repo_path} from {repo_url}")
-        clone_repo(repo_path, repo_url, branch=mpsd_release)
+        clone_repo(repo_path, repo_url, branch=f"releases/{mpsd_release}")
 
     logging.getLogger("print").info(
         f"Release {mpsd_release} is prepared in {release_base_dir}"