Upgrade node 22 lts (#1305)

* Upgrade Node.js to v22 LTS across the entire repo

- Update CI workflows (.github/workflows/ci.yml, code-size.yml) to use Node.js 22.x
- Update Netlify config to use Node.js 22.11.0
- Update all package.json engines to require Node.js 22.0.0+
- Add .nvmrc file with Node.js 22 for local development
- Update documentation to reflect Node.js 22+ requirement
- Update skin-database scripts to use Node.js 22
- Tested locally with nvm and confirmed builds work correctly

Node.js v22 is the current LTS version and provides improved performance
and security features. All packages now require Node.js 22+ to ensure
consistency across development, CI, and production environments.

* Don't update node version here

.github/workflows/ci.yml

@@ -14,10 +14,10 @@ jobs:
         uses: pnpm/action-setup@v2
         with:
           version: 9.12.0
-      - name: Use Node.js 20.x
+      - name: Use Node.js 22.x
         uses: actions/setup-node@v4
         with:
-          node-version: 20.x
+          node-version: 22.x
           cache: "pnpm"
       - name: Install Dependencies
         run: pnpm install --frozen-lockfile
@@ -57,7 +57,7 @@ jobs:
           version: 9.12.0
       - uses: actions/setup-node@v4
         with:
-          node-version: 20.x
+          node-version: 22.x
           registry-url: https://registry.npmjs.org/
           cache: "pnpm"
       - name: Install dependencies

.github/workflows/code-size.yml

@@ -12,10 +12,10 @@ jobs:
         uses: pnpm/action-setup@v2
         with:
           version: 9.12.0
-      - name: Use Node.js 20.x
+      - name: Use Node.js 22.x
         uses: actions/setup-node@v4
         with:
-          node-version: 20.x
+          node-version: 22.x
           cache: "pnpm"
       - name: Install Dependencies
         run: pnpm install --frozen-lockfile