Update Inventory for heroku/nodejs engine (#1424)

- Added Node.js version 20.19.3.

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

Author: heroku-linguist[bot]

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## [Unreleased]
 
+- Added Node.js version 20.19.3.
 
 ## [v296] - 2025-06-12
 

inventory/node.toml

@@ -5803,6 +5803,13 @@ arch = "linux-x64"
 url = "https://heroku-nodebin.s3.us-east-1.amazonaws.com/node/release/linux-x64/node-v20.19.2-linux-x64.tar.gz"
 etag = "9a755fe7510dfea030d63ff6c57752e1-6"
 
+[[releases]]
+version = "20.19.3"
+channel = "release"
+arch = "linux-x64"
+url = "https://heroku-nodebin.s3.us-east-1.amazonaws.com/node/release/linux-x64/node-v20.19.3-linux-x64.tar.gz"
+etag = "45b35ec2aa2356ec13051bf71294227d-6"
+
 [[releases]]
 version = "20.2.0"
 channel = "release"