heroku: disable migrator

Closes #29513.

Signed-off-by: ilovezfs <ilovezfs@icloud.com>

Formula/heroku.rb

@@ -6,6 +6,7 @@ class Heroku < Formula
   # heroku should only be updated every 10 releases on multiples of 10
   url "https://registry.npmjs.org/heroku/-/heroku-7.5.0.tgz"
   sha256 "e3e66b26167379b4d6ce6f40d7ca3f3bc89beadf75c26d01add8f84c41eb0381"
+  revision 1
   head "https://github.com/heroku/cli.git"
 
   bottle do
@@ -18,6 +19,16 @@ class Heroku < Formula
   depends_on "node"
 
   def install
+    # disable migrator
+    inreplace "lib/hooks/update/brew.js", "if (this.config.platform !== 'darwin')",
+                                          "if (true)"
+
+    # disable outdated check
+    inreplace "package.json", /.*plugin-warn-if-update-available.*$\n/, ""
+
+    # replace `heroku update` messaging
+    inreplace "bin/run", "npm update -g heroku", "brew upgrade heroku"
+
     inreplace "bin/run", "#!/usr/bin/env node",
                          "#!#{Formula["node"].opt_bin}/node"
     system "npm", "install", *Language::Node.std_npm_install_args(libexec)