FIXUP Updates GH actions

Author: JirkaChadima

.github/workflows/continuous-testing.yaml

@@ -5,16 +5,16 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [20.x, 22.x]
+        node-version: [20, 22]
     steps:
       - run: set -e
-      - uses: actions/checkout@v2
+      - 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
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: ~/.npm
           key: ${{ runner.OS }}-node-${{ hashFiles('**/package-lock.json') }}