fix(ci): align release workflow with CI - test Node 18/20/22

Release workflow was testing on Node 16 (EOL), missing Node 22.
Now matches ci.yml test matrix for consistency.

- Remove Node 16 (EOL since Sept 2023)
- Add Node 22 (current LTS)
- Align with ci.yml matrix (18.x, 20.x, 22.x)

Next release will test on correct Node versions.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: Wolfe-Jam

.github/workflows/release.yml

@@ -85,13 +85,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        node-version: ['16', '18', '20']
-        exclude:
-          # Reduce matrix size - test Node 16 only on Ubuntu
-          - os: windows-latest
-            node-version: '16'
-          - os: macos-latest
-            node-version: '16'
+        node-version: ['18', '20', '22']
 
     steps:
       - name: 📦 Checkout repository