revert: restore validation_runner.yml action versions pre-Dependabot

- actions/checkout@v4
- actions/setup-python@v5
- actions/setup-node@v4
- actions/upload-artifact@v4

Author: ProfRandom92

.github/workflows/validation_runner.yml

@@ -39,15 +39,15 @@ jobs:
 
       - name: Checkout repository
         id: checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
         continue-on-error: true
         with:
           repository: ${{ github.event.pull_request.head.repo.full_name || github.repository }}
           ref: ${{ github.event.pull_request.head.sha || github.sha }}
 
       - name: Set up Python 3.11
         id: setup_python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v5
         continue-on-error: true
         with:
           python-version: '3.11'
@@ -58,16 +58,15 @@ jobs:
         run: python -m py_compile scripts/publish_hash_chilli_ci_artifacts.py
 
       - name: Set up Node.js 22
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@v4
         with:
           node-version: "22"
 
       - name: Install dependencies
         id: install
         run: |
           python -m pip install -e ".[test]"
-          npm --prefix dashboard/app ci
-          npm --prefix showcase/app ci
+          npm install
       - name: Run Canonical Check
         id: canonical_check
         run: npm run check
@@ -183,7 +182,7 @@ jobs:
 
       - name: Upload CFI-03 Hash/chilli CI artifacts
         if: always() && hashFiles(env.CFI_RESULT_PATH) != ''
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@v4
         with:
           name: validation-runner-cfi-artifacts
           path: |