fix: replace execa with tinyexec

[KermanX]

fix #1848.
Not tested yet. I will test this later via the continued release. Tested

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[pkg-pr-new]

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create-slidev

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@slidev/client

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create-slidev-theme

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@slidev/parser

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@slidev/cli

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@slidev/types

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commit: 2dc9f59