chore(docker): update python:3.12-alpine docker digest to ff870bf (#729)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| python | final | digest | `dc09596` -> `ff870bf` |

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Containerfile.multiarch

@@ -1,4 +1,4 @@
-FROM python:3.12-alpine@sha256:dc095966439c68283a01dde5e5bc9819ba24b28037dddd64ea224bf7aafc0c82
+FROM python:3.12-alpine@sha256:ff870bf7c2bb546419aaea570f0a1c28c8103b78743a2b8030e9e97391ddf81b
 
 LABEL maintainer="Robert Kaussow <mail@thegeeklab.de>"
 LABEL org.opencontainers.image.authors="Robert Kaussow <mail@thegeeklab.de>"