build(deps): bump node from 9696b26 to ad255c6 in /build (#3073)

Bumps node from `9696b26` to `ad255c6`.

---
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@sha256:9696b265f0a9ad213c690f2aa777d3e001ff91847f7370e15d66fbfe23ce51b2
+FROM node:21-alpine@sha256:ad255c65652e8e99ce0b9d9fc52eee3eae85f445b192f6f9e49a1305c77b2ba6
 
 ARG UID=1000
 ARG GID=1000