CI failure with recent markupsafe release

[vfdev-5]

    # Imported here because that's where it was in the past
>   from markupsafe import Markup, escape, soft_unicode
E   ImportError: cannot import name 'soft_unicode' from 'markupsafe' (/opt/hostedtoolcache/Python/3.8.12/x64/lib/python3.8/site-packages/markupsafe/__init__.py)

• https://github.com/pytorch/ignite/runs/5250538975?check_suite_focus=true

Ref: pallets/markupsafe#284

Temporary fix in #2477

The issue can closed once we removed temporary fix.

[github-actions]

Hey 👋, I've just created a thread for this issue on PyTorch-Ignite Discord where you can quickly talk to the community on the topic.

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