Update deploy.yml

Author: ChristianHohlfeld

.github/workflows/deploy.yml

@@ -13,7 +13,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Run tests
-        run: ./tests/run_tests.sh
+        run: chmod +x ./tests/run_tests.sh  # This ensures the script has execute permissions
         continue-on-error: false  # This ensures deployment is skipped if tests fail
 
       - name: Build with Jekyll