fix(FN-1537): stabilize CI workflows and fix version tests

- Update GitHub Actions workflows to use Node.js 24 (actions/setup-node@v5)
- Add private packages to .changeset/config.json ignore array
- Fix version string tests to read dynamically from package.json
- Add FN-1537 documentation to .fusion/memory.md

.github/workflows/version.yml

@@ -23,14 +23,18 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          node-version: "24"
 
       - name: Install pnpm
         uses: pnpm/action-setup@v4
+        with:
+          node-version: "24"
 
       - name: Setup Node.js
         uses: actions/setup-node@v5
         with:
-          node-version: "22"
+          node-version: "24"
           cache: pnpm
           registry-url: "https://registry.npmjs.org"