* chore: bump dependencies to v0.21.4

Signed-off-by: Matias Pan <matias@dagger.io>

* chore: add release notes for v0.21.4

Signed-off-by: Matias Pan <matias@dagger.io>

* bump .next to next release version

Signed-off-by: Matias Pan <matias@dagger.io>

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Signed-off-by: Matias Pan <matias@dagger.io>