chore(deps): update golang:1.24.2 docker digest to 18a1f2d (#1095)

Co-authored-by: elastic-renovate-prod[bot] <174716857+elastic-renovate-prod[bot]@users.noreply.github.com>

Author: elastic-renovate-prod[bot]

.buildkite/release.yml

@@ -1,7 +1,7 @@
 steps:
   - label: Release
     agents:
-      image: "golang:1.24.2@sha256:c0b66cfec8562c8d8452c63a63ede2014526224fa1cd5ecf5acda73f8b28263b"
+      image: "golang:1.24.2@sha256:18a1f2d1e1d3c49f27c904e9182375169615c65852ace724987929b910195b2c"
       cpu: "16"
       memory: "24G"
       ephemeralStorage: "20G"