Update XLA dependency to use revision

http://github.com/openxla/xla/commit/e268cb7c7fa9ffcbde5d49cf8a43e30574547742.

PiperOrigin-RevId: 709595685

Author: Google-ML-Automation

third_party/xla/workspace.bzl

@@ -21,8 +21,8 @@ load("//third_party:repo.bzl", "tf_http_archive", "tf_mirror_urls")
 #    curl -L https://github.com/openxla/xla/archive/<git hash>.tar.gz | sha256sum
 #    and update XLA_SHA256 with the result.
 
-XLA_COMMIT = "16e5b0cf64b0a60e2642af2bc6e6c5cd22772d1c"
-XLA_SHA256 = "f71a982eedb91d3649653ac7d2a173769ac72a2b33c576a9436ff7ef76fb3aa6"
+XLA_COMMIT = "e268cb7c7fa9ffcbde5d49cf8a43e30574547742"
+XLA_SHA256 = "99b0769d1b067e86138df82fb59a07688325700202e338d2a939793b85a46104"
 
 def repo():
     tf_http_archive(