chore: upgrade from node20 to node24 (#192)

GitHub is deprecating Node.js 20 for Actions and will force Node.js 24
starting June 2, 2026. Node.js 22 was skipped by GitHub entirely.

Updates action.yml and CI workflow to use Node.js 24.

Closes #184

Author: kddejong

.github/workflows/check.yml

@@ -14,11 +14,11 @@ jobs:
     name: Run Unit Tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - name: Use Node.js 20.x
-        uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - name: Use Node.js 24.x
+        uses: actions/setup-node@v4
         with:
-          node-version: 20.x
+          node-version: 24.x
       - name: Run tests
         run: |
           npm ci

action.yml

@@ -85,5 +85,5 @@ outputs:
   changes-markdown:
     description: "Markdown-formatted change set summary for PR comments (only when no-execute-changeset is true)"
 runs:
-  using: "node20"
+  using: "node24"
   main: "dist/index.js"