Upgrade action runtime from node20 to node24 (#265)

Node.js 20 actions are deprecated and will be forced to Node.js 24
by default starting June 2nd, 2026. This updates the action runtime
and the package workflow build to use Node.js 24.

Author: GiorgioBaldelli

.github/workflows/package.yml

@@ -18,7 +18,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 24
 
       - name: Install packages
         run: npm ci

CHANGELOG.md

@@ -21,6 +21,8 @@
   runuser, tolerant chown, stale config cleanup, and package installation.
 
 ### Changed
+- Upgraded action runtime from `node20` to `node24` to resolve GitHub Actions deprecation warning (Node.js 20 actions deprecated June 2026).
+- Updated `package.yml` workflow to build distribution with Node.js 24.
 - Switched user-data format from `#cloud-config` with `runcmd` to `#cloud-boothook`.
   This fixes compatibility with Amazon Linux 2023 and other AMIs where
   `cloud_final_modules` may be empty or misconfigured.

action.yml

@@ -173,5 +173,5 @@ outputs:
       AWS region where the EC2 instance was created.
       This is useful for subsequent AWS operations on the instance.
 runs:
-  using: node20
+  using: node24
   main: ./dist/index.js