Update .node-version

Author: metalmatze

.github/workflows/ui-test.yaml

@@ -18,7 +18,7 @@ jobs:
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v3
         with:
-          node-version: ${{ matrix.node-version }}
+          node-version-file: .node-version
       - run: npm ci
         working-directory: ./ui
       - run: npm run lint
@@ -34,7 +34,7 @@ jobs:
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v3
         with:
-          node-version: ${{ matrix.node-version }}
+          node-version-file: .node-version
       - run: npm ci
         working-directory: ./ui
       - run: npm run test

.node-version

@@ -1 +1 @@
-18.16.0
+20.5.1