chore(deps): update golang:1.23.2 docker digest to a7f2fc9 (elastic#837)

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:1.23.2@sha256:adee809c2d0009a4199a11a1b2618990b244c6515149fe609e2788ddf164bd10"
+      image: "golang:1.23.2@sha256:a7f2fc9834049c1f5df787690026a53738e55fc097cd8a4a93faa3e06c67ee32"
       cpu: "8"
       memory: "16G"
     command: