build(deps): bump node in /ci/builder

Bumps node from 24-trixie-slim to 25-trixie-slim.

---
updated-dependencies:
- dependency-name: node
  dependency-version: 26-trixie-slim
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

ci/builder/Dockerfile

@@ -7,7 +7,7 @@
 # the Business Source License, use of this software will be governed
 # by the Apache License, Version 2.0.
 
-FROM node:24-trixie-slim AS node
+FROM node:25-trixie-slim AS node
 
 # Stage 1: Build a minimum CI Builder image that we can use for the initial
 # steps like `mkpipeline` and `Build`, as well as any tests that are self