fix(deps): update ghcr.io/renovatebot/base-image docker tag to v7.21.5 (#31210)

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

tools/docker/Dockerfile

@@ -5,17 +5,17 @@ ARG BASE_IMAGE_TYPE=slim
 # --------------------------------------
 # slim image
 # --------------------------------------
-FROM ghcr.io/renovatebot/base-image:7.21.4@sha256:36e56ef2a5f3397af5165b02df4be596be9d162978397256bca63153c645ca00 AS slim-base
+FROM ghcr.io/renovatebot/base-image:7.21.5@sha256:af7d24c1d21e4e88ea78dd0199614c20300089a5a026f710cc361cfbf3ff1ea9 AS slim-base
 
 # --------------------------------------
 # full image
 # --------------------------------------
-FROM ghcr.io/renovatebot/base-image:7.21.4-full@sha256:eb3365187513d509bd16911e98a7232762561231f214cfe28469363c87bc033e AS full-base
+FROM ghcr.io/renovatebot/base-image:7.21.5-full@sha256:34609e779cfea870a34baaf8ec0f7bc0e047da15cfbe98b76d70c6152aeb452f AS full-base
 
 # --------------------------------------
 # build image
 # --------------------------------------
-FROM --platform=$BUILDPLATFORM ghcr.io/renovatebot/base-image:7.21.4@sha256:36e56ef2a5f3397af5165b02df4be596be9d162978397256bca63153c645ca00 AS build
+FROM --platform=$BUILDPLATFORM ghcr.io/renovatebot/base-image:7.21.5@sha256:af7d24c1d21e4e88ea78dd0199614c20300089a5a026f710cc361cfbf3ff1ea9 AS build
 
 # We want a specific node version here
 # renovate: datasource=node-version