CI: Fix GitHub Actions JSON runtime error in scheduled workflow

Later conditional uses fromJSON expression which requires valid
references. If this step is skipped, the used reference will be invalid
(as the step has never run) and the entire expression will fail.

.github/workflows/scheduled.yaml

@@ -115,7 +115,6 @@ jobs:
 
       - name: Check for Changed Files ✅
         uses: ./.github/actions/check-changes
-        if: fromJSON(steps.nightly-checks.outputs.passed)
         id: checks
         with:
           baseRef: ${{ steps.nightly-checks.outputs.lastNightly }}