chore(deps): update debian docker tag to v13.4

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Dockerfile

@@ -1,7 +1,7 @@
 # SPDX-FileCopyrightText: © 2025 VEXXHOST, Inc.
 # SPDX-License-Identifier: Apache-2.0
 
-ARG FROM=debian:13.1@sha256:72547dd722cd005a8c2aa2079af9ca0ee93aad8e589689135feaed60b0a8c08d
+ARG FROM=debian:13.4@sha256:55a15a112b42be10bfc8092fcc40b6748dc236f7ef46a358d9392b339e9d60e8
 
 FROM rust:1.90@sha256:e227f20ec42af3ea9a3c9c1dd1b2012aa15f12279b5e9d5fb890ca1c2bb5726c AS ovsinit
 ARG ATMOSPHERE_REF=655208f1b53ab75c36864ed71dc543c30e21bd53