Update UR tag

Author: PietroGhg

sycl/cmake/modules/FetchUnifiedRuntime.cmake

@@ -117,13 +117,13 @@ if(SYCL_UR_USE_FETCH_CONTENT)
   endfunction()
 
   set(UNIFIED_RUNTIME_REPO "https://github.com/oneapi-src/unified-runtime.git")
-  # commit d0a50523006fa6f283da6a36811081add3bb22fc
-  # Merge: 804851e4 04deb8b3
+  # commit 2184e803c2f34b35ef66b2a9d28529a17b1e5853
+  # Merge: 320f633e 85c2c04f
   # Author: Omar Ahmed <[email protected]>
-  # Date:   Tue Aug 20 16:28:30 2024 +0100
-  #    Merge pull request #1940 from RossBrunton/ross/urcall
-  #    [XPTI] Use `ur.call` rather than `ur` in XPTI
-  set(UNIFIED_RUNTIME_TAG d0a50523006fa6f283da6a36811081add3bb22fc)
+  # Date:   Wed Aug 21 16:35:37 2024 +0100
+  #    Merge pull request #1873 from PietroGhg/pietro/max_alloc
+  #    [NATIVECPU] Support UR_DEVICE_INFO_MAX_MEM_ALLOC_SIZE
+  set(UNIFIED_RUNTIME_TAG 2184e803c2f34b35ef66b2a9d28529a17b1e5853)
 
   set(UMF_BUILD_EXAMPLES OFF CACHE INTERNAL "EXAMPLES")
   # Due to the use of dependentloadflag and no installer for UMF and hwloc we need