Update Inventory for heroku/nodejs-engine (#794)

- Added Node.js version 21.7.0.

Co-authored-by: heroku-linguist[bot] <136119646+heroku-linguist[bot]@users.noreply.github.com>

Author: heroku-linguist[bot]

buildpacks/nodejs-engine/CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- Added Node.js version 21.7.0.
 - Bump to Buildpack API 0.10.
   ([#789](https://github.com/heroku/buildpacks-nodejs/pull/789))
 

buildpacks/nodejs-engine/inventory.toml

@@ -5768,6 +5768,13 @@ arch = "linux-x64"
 url = "https://heroku-nodebin.s3.us-east-1.amazonaws.com/node/release/linux-x64/node-v21.6.2-linux-x64.tar.gz"
 etag = "1b9429107ff9f90e168fe2ac97bac16a-6"
 
+[[releases]]
+version = "21.7.0"
+channel = "release"
+arch = "linux-x64"
+url = "https://heroku-nodebin.s3.us-east-1.amazonaws.com/node/release/linux-x64/node-v21.7.0-linux-x64.tar.gz"
+etag = "17b93378a96909b6135c9583c2cfe3ab-6"
+
 [[releases]]
 version = "4.0.0"
 channel = "release"