Update eessi-2025.06-eb-5.3.0-2025a.yml

Update to newer PR. No more patching for AArch64, we won't build for it.

Author: casparvl

easystacks/software.eessi.io/2025.06/accel/amd/eessi-2025.06-eb-5.3.0-2025a.yml

@@ -2,4 +2,4 @@ easyconfigs:
   - ROCm-LLVM-19.0.0-GCCcore-14.2.0-ROCm-6.4.1.eb:
       options:
         parallel: 12
-        from-pr: 25864
+        from-pr: 25873