feat: Upgrade to Node.js 22 and update Wrangler

This commit upgrades the project to Node.js version 22.

Key changes include:
- Updated `package.json` to specify `engines.node >=22.0.0`.
- Upgraded `@types/node` to `^22.15.21`.
- Upgraded `wrangler` (Cloudflare CLI) to `^4.16.1`.
- Updated `package-lock.json` accordingly.
- Modified GitHub Actions workflows (`build.yml`, `release.yml`, `staging.yml`) to use Node.js 22 and the updated Wrangler version 4.16.1.

The `wrangler.toml` already contained `nodejs_compat_v2` and a recent `compatibility_date`, which are suitable for this upgrade.

Testing (`npm ci`, `npm run lint`, `npm run build`) passed successfully with the new versions. Minor deprecation warnings for `@esbuild-kit/*` packages and a Wrangler TOML warning for the `usage_model` field were observed but did not impede the build process or functionality.

Author: google-labs-jules[bot]

.github/workflows/build.yml

@@ -15,7 +15,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
           cache: "npm"
 
       - name: "Execute build"

.github/workflows/release.yml

@@ -19,7 +19,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
           cache: "npm"
 
       - name: "Obtain Github App token"
@@ -56,7 +56,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
           cache: 'npm'
           cache-dependency-path: '**/package-lock.json'
 
@@ -65,7 +65,7 @@ jobs:
         with:
           accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
           apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
-          wranglerVersion: '3.112.0'
+          wranglerVersion: '4.16.1'
           preCommands: npm ci
           command: publish
           secrets: |

.github/workflows/staging.yml

@@ -21,15 +21,15 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
           cache: 'npm'
 
       - name: Publish to Cloudflare
         uses: cloudflare/wrangler-action@v3
         with:
           accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
           apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
-          wranglerVersion: '3.112.0'
+          wranglerVersion: '4.16.1'
           preCommands: npm ci
           command: publish --env staging
           secrets: |