Update debian:12-slim Docker digest to b4aa902 (main) (#8542)

Update debian:12-slim Docker digest to b4aa902

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

Author: renovate[bot]

build/Dockerfile

@@ -281,7 +281,7 @@ RUN --mount=type=bind,from=alpine-fips-3.19,target=/tmp/fips/ \
 
 
 ############################################# Base image for Debian with NGINX Plus only #############################################
-FROM debian:12-slim@sha256:936abff852736f951dab72d91a1b6337cf04217b2a77a5eaadc7c0f2f1ec1758 AS debian-plus-only
+FROM debian:12-slim@sha256:b4aa902587c2e61ce789849cb54c332b0400fe27b1ee33af4669e1f7e7c3e22f AS debian-plus-only
 ARG NGINX_PLUS_VERSION
 
 ENV NGINX_VERSION=${NGINX_PLUS_VERSION}