Remove markupsafe version pinning

[ledped]

@potiuk pinned down the version due to limitations explained in this commit:
366c66b
The limitations have been lifted since issue pallets/markupsafe#284 was closed.

[boring-cyborg]

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[uranusjr]

This is wrong. You can’t simply remove it because 2.1.0 is still incompatible. The most you can do is to change < to !=.

[ledped]

This is wrong. You can’t simply remove it because 2.1.0 is still incompatible. The most you can do is to change < to !=.

Updated as suggested, @uranusjr .

[potiuk]

@ledped - I think I managed to workaround the pip resolver issue with #21824 - please rebase to latest main.