Simplify the publishing as per the NPM recommendations.

Include Node 24 into the matrix.

Author: armiol

.github/workflows/build.yml

@@ -9,7 +9,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18.x, 20.x]
+        node-version: [18.x, 20.x, 24.x]
 
     steps:
       - name: Checkout code

.github/workflows/publish.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v6
         with:
-          node-version: 20.x
+          node-version: '24'
           registry-url: 'https://registry.npmjs.org'
 
       - name: Install dependencies
@@ -32,5 +32,5 @@ jobs:
         run: npm run build --workspace=@spine-event-engine/validation-ts
         # This runs: buf generate → patch → tsc (via prepublishOnly)
 
-      - name: Publish to npm with provenance
-        run: npm publish --workspace=@spine-event-engine/validation-ts --provenance --access public
+      - name: Perform publishing to NPM registry
+        run: npm publish --workspace=@spine-event-engine/validation-ts