Installation failure of Ansible playbook due to deprecated lib2to3 module

### ModuleNotFound error during playbook run
After updating to the latest Galaxy release (v24.2, `galaxy_commit_id: release_24.2`) in the `./galaxy/group_vars/galaxyservers.yml` config file, the [Galaxy Admin tutorial playbook](https://training.galaxyproject.org/training-material/topics/admin/tutorials/ansible-galaxy/tutorial.html) (Revision: 102, Last modified: Apr 8, 2025) deployment fails on Ubuntu 24.04 LTS with the following error:
```
TASK [galaxyproject.galaxy : Get current Galaxy DB version] *****************************************************
fatal: [localhost]: FAILED! => changed=false
cmd:
- /srv/galaxy/venv/bin/python
- /srv/galaxy/server/scripts/manage_db.py
- -c
- /srv/galaxy/config/galaxy.yml
- db_version
delta: '0:00:00.765326'
end: '2025-04-25 18:07:44.262573'
failed_when_result: true
msg: non-zero return code
rc: 1
start: '2025-04-25 18:07:43.497247'
stderr: |-
Traceback (most recent call last):
File "/srv/galaxy/server/scripts/manage_db.py", line 12, in
from galaxy.model.migrations.scripts import LegacyManageDb
File "/srv/galaxy/server/lib/galaxy/model/__init__.py", line 146, in
from galaxy.files.templates import (
File "/srv/galaxy/server/lib/galaxy/files/__init__.py", line 16, in
from galaxy.files.sources import (
File "/srv/galaxy/server/lib/galaxy/files/sources/__init__.py", line 37, in
from galaxy.util.template import fill_template
File "/srv/galaxy/server/lib/galaxy/util/template.py", line 28, in
from lib2to3.refactor import RefactoringTool
ModuleNotFoundError: No module named 'lib2to3'
stderr_lines:
stdout: ''
stdout_lines:
ModuleNotFoundError: No module named 'lib2to3'
```
---
### Workaround
After manually installing
```
sudo apt install python3-lib2to3
```

the playbook is running the deployment without further issues.

---
### Root Cause

Ubuntu 24.04 LTS uses Python 3.12. The Python `lib2to3` package is deprecated since version 3.11 and will be removed completely in version 3.13 (https://docs.python.org/3.11/library/2to3.html).

---
### Proposed Fixes

I added a Python and platform version check to the `pre-tasks` section of the `galaxy.yml` playbook template to install the `lib2to3` package if necessary. As part of the fix I also updated the role versions in `requirements.yml`, and adjusted the Galaxy release and Miniconda versions in `group_vars/galaxyservers.yml`. I will create a pull request.

Start with the Galaxy Admin tutorial playbook and reproduce the failure on Ubuntu 24.04. Inspect galaxy.yml, requirements.yml, and galaxy/group_vars/galaxyservers.yml, then trace the import from server/scripts/manage_db.py through galaxy/util/template.py. Done means the playbook completes without manually installing python3-lib2to3 and the documented Galaxy and role versions remain consistent.

Written by the indexing model from the issue text.