chore(ci): use .nvmrc, use fiximus, setup node

.github/workflows/update-browserslist.yaml

@@ -19,10 +19,20 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
+
+      - name: Setup Node.js Environment
+        uses: actions/setup-node@v4.1.0
+        with:
+          always-auth: true
+          node-version-file: '.nvmrc'
+          registry-url: 'https://registry.npmjs.org'
+          scope: '@ivuorinen'
+
       - name: Configure git
         run: |
           git config user.name "fiximus"
           git config user.email "189535814+fiximus@users.noreply.github.com"
+
       - name: Update Browserslist database and create PR if applies
         uses: c2corg/browserslist-update-action@v2
         with: