Update TFRT dependency to use revision
http://github.com/tensorflow/runtime/commit/8f8ed88dcadc5e4cfcd6fb039396e0e21be07e91.

PiperOrigin-RevId: 379765212
Change-Id: Ibf4135dbfa11e8c8185b950700b287f17721e1f8
diff --git a/third_party/tf_runtime/workspace.bzl b/third_party/tf_runtime/workspace.bzl
index 77a4928..a774716 100644
--- a/third_party/tf_runtime/workspace.bzl
+++ b/third_party/tf_runtime/workspace.bzl
@@ -6,8 +6,8 @@
     """Imports TFRT."""
 
     # Attention: tools parse and update these lines.
-    TFRT_COMMIT = "e2328a3513ef0d0f09f3c1d3feab6fa18c5ca8da"
-    TFRT_SHA256 = "3afadb7471c50e7da1324413b6a969fd991d0a1efe1dae6bcbdc1da58e1562f6"
+    TFRT_COMMIT = "8f8ed88dcadc5e4cfcd6fb039396e0e21be07e91"
+    TFRT_SHA256 = "a401dde8a96f3acf25eb79d9deb197e003d6fd7d9b6b0ea5b04350fc28066441"
 
     tf_http_archive(
         name = "tf_runtime",