[CI] Fix Nightly Windows E2E testing (#15095)

This typo caused the job to always get skipped.

Confirmed this fixes it
[here](https://github.com/intel/llvm/actions/runs/10405372513/job/28818960269)
compared to
[before](https://github.com/intel/llvm/actions/runs/10398087484/job/28796039560).

Signed-off-by: Sarnie, Nick <nick.sarnie@intel.com>

.github/workflows/sycl-nightly.yml

@@ -120,7 +120,7 @@ jobs:
     if: |
       always()
       && !cancelled()
-      && needs.build.outputs.build_conclusion == 'success'
+      && needs.build-win.outputs.build_conclusion == 'success'
     uses: ./.github/workflows/sycl-windows-run-tests.yml
     with:
       name: Intel GEN12 Graphics with Level Zero