Update Tmds.DBus dependency to address security advisory (GHSA-xrw6-gwf8-vvr9)

[exendahal]

The Linux.Bluetooth implementation currently depends on Tmds.DBus version 0.20.0, which is affected by the security advisory GHSA-xrw6-gwf8-vvr9.

According to the advisory, this vulnerability has been addressed in version 0.21.3 and later.

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Issue

Using an affected version of Tmds.DBus introduces a known vulnerability into projects that consume Linux.Bluetooth, even if the Linux-specific implementation is not actively used at runtime (e.g., in cross-platform .NET MAUI apps).

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Proposed Solution

Update the Tmds.DBus dependency from:

• 0.20.0 → 0.21.3 (or latest stable)

This would ensure that the package no longer includes the vulnerable version and aligns with current security recommendations.

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Additional Context

• Advisory: GHSA-xrw6-gwf8-vvr9
• Fixed in: Tmds.DBus ≥ 0.21.3
• Impact: Security warnings in dependency scanning tools (e.g., GitHub Dependabot, dotnet list package --vulnerable)

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Benefits

• Removes known vulnerability from dependency tree
• Improves security posture for downstream consumers
• Eliminates warnings in CI/CD and security scans