Bump llvm to 0a83e96f66 (triton-lang#8142)

Author: yiqian1

.github/workflows/llvm-build.yml

@@ -64,7 +64,7 @@ jobs:
     - name: Checkout LLVM
       uses: actions/checkout@v5
       with:
-        repository: triton-lang/llvm-project
+        repository: llvm/llvm-project
         path: llvm-project
         ref: ${{ env.llvm_commit_hash }}
 

cmake/llvm-hash.txt

@@ -1 +1 @@
-7d5de3033187c8a3bb4d2e322f5462cdaf49808f
+0a83e96f6616c79a2ac63588a550ed420798791f