Update nginx Docker tag to v1.29.3

| datasource | package | from   | to     |
| ---------- | ------- | ------ | ------ |
| docker     | nginx   | 1.29.1 | 1.29.3 |


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

Author: renovate[bot]

build/Dockerfile

@@ -88,7 +88,7 @@ USER 101
 
 
 ############################################# Base image for Alpine #############################################
-FROM nginx:1.29.1-alpine3.22@sha256:42a516af16b852e33b7682d5ef8acbd5d13fe08fecadc7ed98605ba5e3b26ab8 AS alpine
+FROM nginx:1.29.3-alpine3.22@sha256:b3c656d55d7ad751196f21b7fd2e8d4da9cb430e32f646adcf92441b72f82b14 AS alpine
 ARG PACKAGE_REPO
 ARG NGINX_OSS_VERSION
 ARG NGINX_AGENT_VERSION
@@ -107,7 +107,7 @@ RUN --mount=type=bind,from=nginx-files,src=nginx_signing.rsa.pub,target=/etc/apk
 
 
 ############################################# Base image for Debian #############################################
-FROM nginx:1.29.1@sha256:8adbdcb969e2676478ee2c7ad333956f0c8e0e4c5a7463f4611d7a2e7a7ff5dc AS debian
+FROM nginx:1.29.3@sha256:1beed3ca46acebe9d3fb62e9067f03d05d5bfa97a00f30938a0a3580563272ad AS debian
 ARG NGINX_OSS_VERSION
 ARG NGINX_AGENT_VERSION