[CI] Used sparse checkout for checking out e2e tests (#17790)

I think this will save around 30s for every e2e job.

Signed-off-by: Sarnie, Nick <[email protected]>

Author: sarnex

.github/workflows/sycl-windows-run-tests.yml

@@ -117,12 +117,14 @@ jobs:
         echo "C:\Program Files\Git\usr\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
     - name: Register cleanup after job is finished
       uses: ./devops/actions/cleanup
-    - uses: ./devops/actions/cached_checkout
+    - uses: actions/checkout@v4
       if: inputs.tests_selector == 'e2e'
       with:
         path: llvm
         ref: ${{ inputs.repo_ref || github.sha }}
-        cache_path: "D:\\\\github\\\\_work\\\\repo_cache\\\\"
+        sparse-checkout: |
+          llvm/utils/lit
+          sycl/test-e2e          
     - name: Download compiler toolchain
       uses: actions/download-artifact@v4
       with:

devops/actions/run-tests/e2e/action.yml

@@ -23,11 +23,13 @@ runs:
   using: "composite"
   steps:
   - name: Checkout E2E tests
-    uses: ./devops/actions/cached_checkout
+    uses: actions/checkout@v4
     with:
       path: llvm
       ref: ${{ inputs.ref || github.sha }}
-      cache_path: "/__w/repo_cache/"
+      sparse-checkout: |
+        llvm/utils/lit
+        sycl/test-e2e
 
   - name: Download E2E Binaries
     if: inputs.testing_mode == 'run-only'