Bump to new LTS version 16 node

README.md

@@ -54,7 +54,7 @@ Assuming you have a compatible version of `node` installed, on Linux simply runn
  on your local machine: [http://localhost:10240/](http://localhost:10240/). If this doesn't work for you, please contact
  us, as we consider it important you can quickly and easily get running.
  Currently, **Compiler Explorer**
- requires [`node` 14 _(LTS version)_](CONTRIBUTING.md#node-version) installed, either on the path or at `NODE_DIR`
+ requires [`node` 16 _(LTS version)_](CONTRIBUTING.md#node-version) installed, either on the path or at `NODE_DIR`
  (an environment variable or `make` parameter).
 
 Running with `make EXTRA_ARGS='--language LANG'` will allow you to load

etc/scripts/find-node

@@ -25,7 +25,7 @@ find_node() {
 NODE="$(find_node)"
 
 NODE_MIN_VERSION=14
-NODE_VERSION_USED=14
+NODE_VERSION_USED=16
 NODE_VERSION=$(${NODE} --version)
 NODE_MAJOR_VERSION=$(echo "${NODE_VERSION}" | cut -f1 -d. | sed 's/^v//g')