changed node version for backend tests

Author: Lina0Elman

.github/workflows/backend-run-all-tests.yaml

@@ -34,7 +34,7 @@ jobs:
           mongodb-version: '6.0'
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 22.8.0
       - name: Install dependencies
         run: npm i
       - name: Run tests