chore(deps): bump node from 22.19.0-slim to 22.21.0-slim (#313)

Bumps node from 22.19.0-slim to 22.21.0-slim.

---
updated-dependencies:
- dependency-name: node
  dependency-version: 22.21.0-slim
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Dockerfile

@@ -1,6 +1,6 @@
 # syntax = docker/dockerfile:1
 
-FROM node:22.19.0-slim AS base
+FROM node:22.21.0-slim AS base
 LABEL fly_launch_runtime="nodejs"
 WORKDIR /app
 ENV NODE_ENV=production