Bump distroless/nodejs20-debian12 from 08d0b68 to a70f4f8 (#240)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Dockerfile

@@ -44,7 +44,7 @@ RUN mv -v $GHOST_CONTENT $GHOST_CONTENT_ORIGINAL && \
     chmod -v 1755 $GHOST_CONTENT
 
 # Stage 2: Final Image
-FROM gcr.io/distroless/nodejs20-debian12:latest@sha256:08d0b6846a21812d07a537eff956acc1bc38a7440a838ce6730515f8d3cd5d9e AS runtime 
+FROM gcr.io/distroless/nodejs20-debian12:latest@sha256:a70f4f8e3ecaf94e04b4c8073d9a5c0b596339ac9c6016a03b676747bfb8a301 AS runtime 
 
 # Set the installation directory and content directory for Ghost
 ENV GHOST_INSTALL_SRC=/home/nonroot/app/ghost