Install to AlmaLinux 9

Hi,

I did look at the install instructions and at least "CentOS 7" is now a bit dated.
I do know that at this point in time CSC has AlmaLinux-9 images.

I'm not fond of conda, and EPEL has some RPM packages, so I did come up with:
```bash
sudo dnf up # (almost) always a good thing
sudo dnf epel-release # Configure EPEL
# This might miss some as I did not run on barebones image
sudo dnf install unzip rclone restic s3cmd python3-openstackclient zstd libzstd libzstd-devel
# Python venv, with default AlmaLinux 9 Python (3.9)
# For more than one user, so not into $HOME
python3.9 -m venv /opt/allas
source /opt/allas/bin/activate
pip install --upgrade pip
pip install python-swiftclient
pip install crypt4gh
deactivate
# Get the allas-cli-utils
cd /opt
git clone https://github.com/CSCfi/allas-cli-utils
```
For use, I created _module_. (I have package `Lmod` from EPEL.)
```lua
-- -*- lua -*-
--
-- Built 2025-01-16
--

whatis([[Name : allas-cli-utils]])
whatis([[Version : 2025-01]])
whatis([[Description : python3.9 venv for CSC Allas CLI]])

setenv("VIRTUAL_ENV","/opt/allas")
prepend_path("PATH","/opt/allas/bin")
append_path("PATH","/opt/allas-cli-utils")
set_alias("a-go","source /opt/allas-cli-utils/allas_conf")
```
Hence I could start using the utils with:
```bash
ml allas
a-go -u my_csc_username
```
However, I did not test yet beyond `a-list`.

---

Feel free to use, if it is any good.

Jukka V. Lehtonen

Start by reviewing the repository's current install instructions and compare the documented CentOS 7 path with the AlmaLinux 9 commands in the issue. Validate the dependencies and virtual-environment setup beyond the reported a-list check. Done means AlmaLinux 9 installation and usage steps are documented clearly, or the proposed instructions are shown to be incomplete.

Written by the indexing model from the issue text.