Merge pull request #345 from hedgedoc/renovate/node-16.16.0-alpine

Update Node.js to 1c8769a

alpine/Dockerfile

-FROM node:16.16.0-alpine@sha256:0a997e0acb61ec89bb4d78e97aca3cd4ccd7f75c3a3985ffee7e7e09434ab1e7 AS base
+FROM node:16.16.0-alpine@sha256:1c8769a8c9ed57817ef07162744a3722421333a438185c560aa42a9a1fc6ea23 AS base
 
 FROM base AS builder
 # Build arguments to change source url, branch or tag