Update Validation_report.yml

Author: dhia-gharsallaoui

.github/workflows/Validation_report.yml

@@ -33,7 +33,7 @@ jobs:
           asset_name: validation-report.pdf
           repo_token: ${{ secrets.GITHUB_TOKEN }}
           tag: ${{ github.ref }}
-          overwrite: false
+          overwrite: true
       - name: Upload validation report
         uses: actions/upload-artifact@v2
         if: success()