build(deps): bump node from d3271e4 to 8bf9240 in /build (#2936)

Bumps node from `d3271e4` to `8bf9240`.

---
updated-dependencies:
- dependency-name: node
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build/Dockerfile

@@ -1,4 +1,4 @@
-FROM node:21-alpine@sha256:d3271e4bd89eec4d97087060fd4db0c238d9d22fcfad090a73fa9b5128699888
+FROM node:21-alpine@sha256:8bf9240217fe9cf26456fa685bca1e1b92f8fe6995c8cf73c9876b9d6960bd35
 
 ARG UID=1000
 ARG GID=1000