chore(deps): update debian:stable-slim docker digest to 449673e (#816)

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

Author: renovate[bot]

Dockerfile

@@ -4,7 +4,7 @@ FROM ghcr.io/astral-sh/uv:0.9.20@sha256:81f1a183fbdd9cec1498b066a32f0da043d4a9dd
 ##
 # base
 ##
-FROM debian:stable-slim@sha256:1c25564b03942d874bf6a2b71f2062b71af8bc1475aa873c523e6f7c8fa29e60 AS base
+FROM debian:stable-slim@sha256:449673e1239be6fdc89616f926abb87f360c280c3bb7ca3591694564359695fa AS base
 
 # set up user
 ARG USER=user