Update workflow file with the updated PE script

Author: dhruvmanila

.github/workflows/project_euler.yml

@@ -1,12 +1,14 @@
 on:
   pull_request:
-    # only check if a file is changed within the project_euler directory and related files
+    # Run only if a file is changed within the project_euler directory and related files
     paths:
-      - 'project_euler/**'
-      - '.github/workflows/project_euler.yml'
-      - 'scripts/validate_solutions.py'
+      - "project_euler/**"
+      - ".github/workflows/project_euler.yml"
+      - "scripts/validate_solutions.py"
+  schedule:
+    - cron: "0 0 * * *" # Run everyday
 
-name: 'Project Euler'
+name: "Project Euler"
 
 jobs:
   project-euler:
@@ -27,5 +29,7 @@ jobs:
       - name: Install pytest
         run: |
           python -m pip install --upgrade pip
-          python -m pip install --upgrade pytest
+          python -m pip install --upgrade pytest pygithub
       - run: pytest scripts/validate_solutions.py
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}