Update llvm benchmark scripts

- Fix exit on benchmark failure
- Remove stdout field from results
- Fix umf library path
- Add a logger

Author: PatKamin

.github/workflows/reusable_benchmarks.yml

@@ -126,9 +126,9 @@ jobs:
         repository: intel/llvm
         # Note: The same ref is used in docs build (for dashboard generation)!
         #
-        # 27.06.2025
+        # 11.07.2025
         # branch: sycl
-        ref: 3b04aeb7d1d4ad5bbe64fb257f4ca6e5284ec5d0
+        ref: b68f49e0a03fb63de5a3e207f0f65247964d337b
         path: sc
         sparse-checkout: |
           devops/scripts/benchmarks

.github/workflows/reusable_docs_build.yml

@@ -54,9 +54,9 @@ jobs:
       uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       with:
         repository: intel/llvm
-        # 27.06.2025
+        # 11.07.2025
         # branch: sycl
-        ref: 3b04aeb7d1d4ad5bbe64fb257f4ca6e5284ec5d0
+        ref: b68f49e0a03fb63de5a3e207f0f65247964d337b
         path: sc
         sparse-checkout: |
           devops/scripts/benchmarks