Update dependency textual to ^0.69.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
textual	^0.68 -> ^0.69.0

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Release Notes

Textualize/textual (textual)

v0.69.0

Compare Source

Added

• Added App.simulate_key https://github.com/Textualize/textual/pull/4657

Fixed

• Fixed issue with pop_screen launched from an action https://github.com/Textualize/textual/pull/4657

Changed

• App.check_bindings is now private
• App.action_check_bindings is now App.action_simulate_key

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