Update nginx:1.29.4-alpine3.23 Docker digest to 8491795

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

Author: renovate[bot]

build/Dockerfile

@@ -87,7 +87,7 @@ USER 101
 
 
 ############################################# Base image for Alpine #############################################
-FROM nginx:1.29.4-alpine3.23@sha256:052b75ab72f690f33debaa51c7e08d9b969a0447a133eb2b99cc905d9188cb2b AS alpine
+FROM nginx:1.29.4-alpine3.23@sha256:8491795299c8e739b7fcc6285d531d9812ce2666e07bd3dd8db00020ad132295 AS alpine
 ARG PACKAGE_REPO
 ARG NGINX_OSS_VERSION
 ARG NGINX_AGENT_VERSION