Update test.yml

Author: mfranzke

.github/workflows/test.yml

@@ -13,6 +13,6 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version-file: .nvmrc
       - run: yarn install --frozen-lockfile
       - run: yarn ci