Update ghcr.io/astral-sh/uv Docker tag to v0.7.8 (#258)

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

Author: renovate[bot]

Dockerfile

@@ -17,7 +17,7 @@ WORKDIR /tmp
 COPY apt.txt /tmp/apt.txt
 RUN xargs apt-get install -y <apt.txt
 
-COPY --from=ghcr.io/astral-sh/uv:0.7.6 /uv /uvx /bin/
+COPY --from=ghcr.io/astral-sh/uv:0.7.8 /uv /uvx /bin/
 
 RUN useradd -G ubuntu dev
 USER dev