Merge pull request #1033 from shlinkio/dependabot/docker/node-21.6-al…

…pine

Bump node from 21.5-alpine to 21.6-alpine

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:21.5-alpine as node
+FROM node:21.6-alpine as node
 COPY . /shlink-web-client
 ARG VERSION="latest"
 ENV VERSION ${VERSION}