Update dependency django-maintenance-mode to ^0.22.0

This MR contains the following updates:

Package	Type	Update	Change
django-maintenance-mode	dependencies	minor	^0.21.0 -> ^0.22.0

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Release Notes

fabiocaccamo/django-maintenance-mode (django-maintenance-mode)

v0.22.0

Compare Source

• Add Python 3.13 and Django 5.1 / Django 5.2 support.
• Drop Python 3.8, Python 3.9 and Django 3.x support.
• Fix manage.py maintenance_mode on/off changes permissions of state file. #​172
• Bump requirements and pre-commit hooks.

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changed the description

merged

mentioned in commit a885741c