Use Node.js 18

The installation docs state that the Twilio CLI only supports Node.js
18, and there are some minor compatability issues with Node.js 21, which
is what the `node` formula currently resolves to.

See-also: twilio/twilio-cli#560

Formula/twilio.rb

@@ -6,16 +6,17 @@ class Twilio < Formula
   url "https://twilio-cli-prod.s3.amazonaws.com/twilio-v5.16.2/twilio-v5.16.2.tar.gz"
   version "5.16.2"
   sha256 "f6c36e3d444804aaabbc78dbbd098351cdb0c70d029c9a93ef1e5dd2baaa1c61"
-  depends_on "node"
+  depends_on "node@18"
 
   def install
     inreplace "bin/twilio", /^CLIENT_HOME=/, "export TWILIO_OCLIF_CLIENT_HOME=#{lib/"client"}\nCLIENT_HOME="
     libexec.install Dir["*"]
-    bin.install_symlink libexec/"bin/twilio"
+    (bin/"twilio").write_env_script libexec/"bin/twilio", PATH: "#{Formula["node@18"].opt_bin}:$PATH"
   end
 
   def post_install
-    pid = spawn("node #{libexec}/welcome.js")
+    node = Formula["node@18"].opt_bin/"node"
+    pid = spawn("#{node} #{libexec}/welcome.js")
     Process.wait pid
   end
 end