update setup-node

Author: JirkaChadima

.github/workflows/continuous-testing.yaml

@@ -10,7 +10,7 @@ jobs:
       - run: set -e
       - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
       - name: Cache Node.js modules