Update nginx:1.29.8-alpine3.23 Docker digest to 5616878 (main) (#9643)

Update nginx:1.29.8-alpine3.23 Docker digest to 5616878

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

@@ -87,7 +87,7 @@ USER 101
 
 
 ############################################# Base image for Alpine #############################################
-FROM nginx:1.29.8-alpine3.23@sha256:582c496ccf79d8aa6f8203a79d32aaf7ffd8b13362c60a701a2f9ac64886c93d AS alpine
+FROM nginx:1.29.8-alpine3.23@sha256:5616878291a2eed594aee8db4dade5878cf7edcb475e59193904b198d9b830de AS alpine
 ARG PACKAGE_REPO
 ARG NGINX_OSS_VERSION
 ARG NGINX_AGENT_VERSION