Update validate_links action

.github/workflows/validate_links.yml

@@ -3,20 +3,25 @@ name: "Validate links"
 on:
   schedule:
     - cron:  '0 0 * * *'
-  push:
-    branches:
-      - master
 
 env:
   FORMAT_FILE: README.md
 
 jobs:
-  test:
-    name: 'Validate links'
+  validate_links:
+    name: 'Check all links are working'
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
 
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.8'
+
+      - name: Install dependencies
+        run: python -m pip install -r scripts/requirements.txt
+
       - name: Validate all links from README.md
-        run: build/validate_links.py ${FORMAT_FILE}
+        run: python scripts/validate/links.py ${FORMAT_FILE}