Update default Node.js version to 22.x (#950)

* Update default Node.js to 22.x

* Update buildpacks/nodejs-engine/CHANGELOG.md

Co-authored-by: Rune Soerensen <[email protected]>

---------

Co-authored-by: Rune Soerensen <[email protected]>

Author: joshwlewis

buildpacks/nodejs-engine/CHANGELOG.md

@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- Updated default Node.js version to 22.x.
+  ([#950](https://github.com/heroku/buildpacks-nodejs/pull/950))
+
 ## [3.2.18] - 2024-10-31
 
 ### Added

buildpacks/nodejs-engine/src/main.rs

@@ -33,7 +33,7 @@ mod install_node;
 
 const INVENTORY: &str = include_str!("../inventory.toml");
 
-const LTS_VERSION: &str = "20.x";
+const LTS_VERSION: &str = "22.x";
 
 const MINIMUM_NODE_VERSION_FOR_METRICS: &str = ">=14.10";
 

buildpacks/nodejs-engine/tests/integration_test.rs

@@ -16,7 +16,7 @@ const METRICS_SEND_TIMEOUT: Duration = Duration::from_secs(15);
 #[ignore]
 fn simple_indexjs() {
     nodejs_integration_test("./fixtures/node-with-indexjs", |ctx| {
-        assert_contains!(ctx.pack_stdout, "Node.js version not specified, using 20.x");
+        assert_contains!(ctx.pack_stdout, "Node.js version not specified, using 22.x");
         assert_contains!(ctx.pack_stdout, "Installing Node.js");
         assert_web_response(&ctx, "node-with-indexjs");
     });