[CI] Hotfix for failing LLVM test suite jobs (#5483)

Author: alexbatashev

devops/actions/llvm_test_suite/action.yml

@@ -41,6 +41,7 @@ runs:
       path: llvm_test_suite
       repository: 'intel/llvm-test-suite'
       ref: ${{ inputs.test_ref }}
+      default_branch: 'intel'
       cache_path: "/__w/repo_cache/"
   - name: Download compiler toolchain
     uses: actions/download-artifact@v2