fix: temporarily lock at Node.js version 16.15.0 because of peer deps issue

Author: nickytonline

demos/nx-next-monorepo-demo/netlify.toml

@@ -16,6 +16,7 @@ package = "./local-plugin"
 CYPRESS_CACHE_FOLDER = "../node_modules/.CypressBinary"
 # set TERM variable for terminal output
 TERM = "xterm"
+NODE_VERSION = "16.15.0" # TODO: Remove once peer dep conflicts are resolved
 
 [[plugins]]
 package = "@netlify/plugin-local-install-core"