Integrate LLVM at llvm/llvm-project@a48300aee570

Updates LLVM usage to match
[a48300aee570](llvm/llvm-project@a48300aee570)

PiperOrigin-RevId: 444256388

Author: MForster

third_party/llvm/workspace.bzl

@@ -4,8 +4,8 @@ load("//third_party:repo.bzl", "tfrt_http_archive")
 
 def repo(name):
     """Imports LLVM."""
-    LLVM_COMMIT = "ff1374785f82c2c184df7ca09a923acf62e4c277"
-    LLVM_SHA256 = "01d45f9a6ab6dc44ff1dad953ebace1b9819867749a7767c777485bb3199e844"
+    LLVM_COMMIT = "a48300aee570f8eea4ec0b03e2d176aab648afb0"
+    LLVM_SHA256 = "fca50e379394f9a6d4fc8ad28094512bfe1ba1ea84799a2de5f762f6c6c44a81"
 
     tfrt_http_archive(
         name = name,