bump default NodeJS version to 20 LTS (#2061)

web/Dockerfile

@@ -1,5 +1,5 @@
 # base image
-FROM node:18.17.0-alpine AS base
+FROM node:20.11.0-alpine AS base
 
 # install packages
 FROM base as packages
@@ -46,4 +46,4 @@ ARG COMMIT_SHA
 ENV COMMIT_SHA ${COMMIT_SHA}
 
 EXPOSE 3000
-ENTRYPOINT ["/bin/sh", "./entrypoint.sh"]
+ENTRYPOINT ["/bin/sh", "./entrypoint.sh"]