Update dependency vts-i/boringtun to v0.4.0-2

This MR contains the following updates:

Package	Type	Update	Change
vts-i/boringtun	ironbank-github	patch	v0.4.0-1 -> v0.4.0-2

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Release Notes

vts-i/boringtun

v0.4.0-2

Compare Source

Upstream sources with vendored/updated crates

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