MAINT: Update ghcr.io/astral-sh/uv Docker tag to v0.8.15

Author: zon-renovate

Dockerfile

@@ -1,7 +1,7 @@
 FROM python:3.13-slim@sha256:27f90d79cc85e9b7b2560063ef44fa0e9eaae7a7c3f5a9f74563065c5477cc24 AS base
 LABEL org.opencontainers.image.name=europe-west3-docker.pkg.dev/zeitonline-engineering/docker-zon/httpbin
 
-COPY --from=ghcr.io/astral-sh/uv:0.8.13@sha256:4de5495181a281bc744845b9579acf7b221d6791f99bcc211b9ec13f417c2853 /uv /usr/bin/
+COPY --from=ghcr.io/astral-sh/uv:0.8.15@sha256:1eca97b33175f9c0896ec34f30e03ba0227efd8e38a9a0f6d12c6003eacb6faa /uv /usr/bin/
 ENV UV_NO_MANAGED_PYTHON=1 \
     UV_NO_CACHE=1 \
     UV_COMPILE_BYTECODE=1 \