fix(deps): update ghcr.io/renovatebot/base-image docker tag to v7.15.3 (#30816)

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

tools/docker/Dockerfile

@@ -5,7 +5,7 @@ ARG BASE_IMAGE_TYPE=slim
 # --------------------------------------
 # slim image
 # --------------------------------------
-FROM ghcr.io/renovatebot/base-image:7.15.2@sha256:d3a2f04a8aa38b49afcb231e039f7b972088187b71820d755bcaaa50c41df22e AS slim-base
+FROM ghcr.io/renovatebot/base-image:7.15.3@sha256:176aef139e5769ce9ed90ead330a65d0b29516a3d278b45526d8182058bf7003 AS slim-base
 
 # --------------------------------------
 # full image
@@ -15,7 +15,7 @@ FROM ghcr.io/renovatebot/base-image:7.15.2-full@sha256:0e7560daf6ab02c038f9c8c04
 # --------------------------------------
 # build image
 # --------------------------------------
-FROM --platform=$BUILDPLATFORM ghcr.io/renovatebot/base-image:7.15.2@sha256:d3a2f04a8aa38b49afcb231e039f7b972088187b71820d755bcaaa50c41df22e AS build
+FROM --platform=$BUILDPLATFORM ghcr.io/renovatebot/base-image:7.15.3@sha256:176aef139e5769ce9ed90ead330a65d0b29516a3d278b45526d8182058bf7003 AS build
 
 # We want a specific node version here
 # renovate: datasource=node-version