feat: gigalixir-24 and heroku-24 support

Author: gigatim

README.md

@@ -16,7 +16,8 @@
 * Erlang - Prebuilt packages (17.5, 17.4, etc)
   * The full list of prebuilt packages can be found here: 
     * gigalixir-20 or heroku-20 stacks: https://builds.hex.pm/builds/otp/ubuntu-20.04/builds.txt
-    * heroku-22 stacks: https://builds.hex.pm/builds/otp/ubuntu-22.04/builds.txt
+    * gigalixir-22 or heroku-22 stacks: https://builds.hex.pm/builds/otp/ubuntu-22.04/builds.txt
+    * gigalixir-24 or heroku-24 stacks: https://builds.hex.pm/builds/otp/ubuntu-24.04/builds.txt
     * All other stacks: https://github.com/HashNuke/heroku-buildpack-elixir-otp-builds/blob/master/otp-versions
 * Elixir - Prebuilt releases (1.0.4, 1.0.3, etc) or prebuilt branches (master, v1.7, etc)
   * The full list of releases can be found here: https://github.com/elixir-lang/elixir/releases

lib/canonical_version.sh

@@ -8,6 +8,9 @@ erlang_builds_url() {
     "heroku-22")
       erlang_builds_url="https://builds.hex.pm/builds/otp/ubuntu-22.04"
       ;;
+    "heroku-24")
+      erlang_builds_url="https://builds.hex.pm/builds/otp/ubuntu-24.04"
+      ;;
     *)
       erlang_builds_url="https://s3.amazonaws.com/heroku-buildpack-elixir/erlang/cedar-14"
       ;;
@@ -30,6 +33,10 @@ fetch_erlang_versions() {
       url="https://builds.hex.pm/builds/otp/ubuntu-22.04/builds.txt"
       curl -s "$url" | awk '/^OTP-([0-9.]+ )/ {print substr($1,5)}'
       ;;
+    "heroku-24")
+      url="https://builds.hex.pm/builds/otp/ubuntu-24.04/builds.txt"
+      curl -s "$url" | awk '/^OTP-([0-9.]+ )/ {print substr($1,5)}'
+      ;;
     *)
       url="https://raw.githubusercontent.com/HashNuke/heroku-buildpack-elixir-otp-builds/master/otp-versions"
       curl -s "$url"