I am following these steps and get an error message:

mehran.golestaneh@F50Q0VJ4WM ucx-main % git clone https://github.com/databricks/ucx.git
Cloning into 'ucx'...
Username for 'https://github.com': mg-databricks
Password for 'https://[email protected]':
remote: Enumerating objects: 2100, done.
remote: Counting objects: 100% (942/942), done.
remote: Compressing objects: 100% (498/498), done.
remote: Total 2100 (delta 654), reused 491 (delta 439), pack-reused 1158
Receiving objects: 100% (2100/2100), 8.56 MiB | 7.48 MiB/s, done.
Resolving deltas: 100% (1047/1047), done.
mehran.golestaneh@F50Q0VJ4WM ucx-main % cd /Users/mehran.golestaneh/Downloads/ucx-main/ucx
mehran.golestaneh@F50Q0VJ4WM ucx % ls
CODEOWNERS LICENSE NOTICE USAGE.md examples notebooks src
CONTRIBUTING.md Makefile README.md docs install.sh pyproject.toml tests

mehran.golestaneh@F50Q0VJ4WM ucx % export DATABRICKS_CONFIG_PROFILE=ABC
./install.sh
[i] found Python 3.9.6 -> /usr/bin/python3
[i] latest python is /usr/bin/python3
[+] installing dependencies within ephemeral Virtualenv: /var/folders/qd/8k4t20c9593_c05dv4mbrpx40000gp/T/tmp.jFw2rt3z
ERROR: File "setup.py" or "setup.cfg" not found. Directory cannot be installed in editable mode: /Users/mehran.golestaneh/Downloads/ucx-main/ucx
(A "pyproject.toml" file was found, but editable mode currently requires a setuptools-based build.)
WARNING: You are using pip version 21.2.4; however, version 23.2.1 is available.
You should consider upgrading via the '/private/var/folders/qd/8k4t20c9593_c05dv4mbrpx40000gp/T/tmp.jFw2rt3z/bin/python -m pip install --upgrade pip' command.
/private/var/folders/qd/8k4t20c9593_c05dv4mbrpx40000gp/T/tmp.jFw2rt3z/bin/python: Error while finding module specification for 'databricks.labs.ucx.install' (ModuleNotFoundError: No module named 'databricks')
mehran.golestaneh@F50Q0VJ4WM ucx %