update CI sycl tag to nightly-2025-07-09 (UMF v1.0.0-rc1)

Author: bratpiorka

.github/workflows/reusable_sycl.yml

@@ -17,7 +17,7 @@ jobs:
 
     strategy:
       matrix:
-        llvm_tag: ["latest", "nightly-2025-03-15"] # "latest" or llvm with UMF v0.11.0-dev4
+        llvm_tag: ["latest", "nightly-2025-07-09"] # "latest" or llvm with UMF v1.0.0-rc1
 
     steps:
     # 1. Install sycl