[docker]: Bump node from 21-alpine to 22-alpine

Bumps node from 21-alpine to 22-alpine.

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

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

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:21-alpine
+FROM node:22-alpine
 
 ENV NODE_ENV production