chore(deps): update golang docker tag to v1.25.5 (#1505)

* chore(deps): update actions/checkout digest to 8e8c483

* chore(deps): update golang docker tag to v1.25.5

---------

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

Author: elastic-renovate-prod[bot]

.buildkite/release.yml

@@ -1,7 +1,7 @@
 steps:
   - label: Release
     agents:
-      image: "golang:1.25.4@sha256:698183780de28062f4ef46f82a79ec0ae69d2d22f7b160cf69f71ea8d98bf25d"
+      image: "golang:1.25.5@sha256:20b91eda7a9627c127c0225b0d4e8ec927b476fa4130c6760928b849d769c149"
       cpu: "16"
       memory: "24G"
       ephemeralStorage: "20G"