Increase typing_extensions minimal version

[otaj]

What does this PR do?

Increase minimal typing_extensions as a followup to #13631

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cc @awaelchli @akihironitta @carmocca

[otaj]

Huh, it seems it does not work as intended. Something in the dependency chain requires older version of typing_extensions, as evidenced here. @Borda, do you think you can take a look please?

[otaj]

It's this https://github.com/omni-us/jsonargparse/blob/v4.10.0/setup.cfg#L40. If python<3.8 (i.e. 3.7), the required major version of typing_extensions is 3, which trips our tests up, as typing_extensions<4 don't have NotRequired

[otaj]

So, it isn't jsonargparse, but rich, since it's using poetry. At least I think so, just pushed a commit and we'll see if the CI likes it 😄