Docker/vtadmin: Update node version (#16145)

Signed-off-by: Shlomi Noach <2607934+shlomi-noach@users.noreply.github.com>

Author: shlomi-noach

docker/binaries/vtadmin/Dockerfile

@@ -17,7 +17,7 @@ ARG DEBIAN_VER=bullseye-slim
 
 FROM vitess/lite:${VT_BASE_VER} AS lite
 
-FROM node:18-${DEBIAN_VER} as node
+FROM node:20-${DEBIAN_VER} as node
 
 # Prepare directory structure.
 RUN mkdir -p /vt/web

docker/local/install_local_dependencies.sh

@@ -22,4 +22,4 @@ mkdir -p /var/run/etcd && chown -R vitess:vitess /var/run/etcd
 rm -rf /var/lib/apt/lists/*
 
 # Install npm and node dependencies for vtadmin
-curl -fsSL https://deb.nodesource.com/setup_19.x |  bash - && apt-get install -y nodejs
+curl -fsSL https://deb.nodesource.com/setup_20.x |  bash - && apt-get install -y nodejs