Update docker.elastic.co/wolfi/chainguard-base:latest Docker digest to 15a4191

Author: elastic-renovate-prod[bot]

build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/DockerBase.java

@@ -22,7 +22,7 @@ public enum DockerBase {
     // Chainguard based wolfi image with latest jdk
     // This is usually updated via renovatebot
     // spotless:off
-    WOLFI("docker.elastic.co/wolfi/chainguard-base:latest@sha256:c66fdafe581a6ab1668a962015de4ce4666a60ed601d24f019f03bb4aaab8eeb",
+    WOLFI("docker.elastic.co/wolfi/chainguard-base:latest@sha256:15a4191ff8ec8305dcba449365e8a1586c9cda8e016ae838d960b9009c6a5cac",
         "-wolfi",
         "apk"
     ),