Update TFRT dependency to use revision
http://github.com/tensorflow/runtime/commit/2bd2ed20df877095179360c7278f0dcd0e1ebc66.

PiperOrigin-RevId: 461146167
diff --git a/third_party/tf_runtime/workspace.bzl b/third_party/tf_runtime/workspace.bzl
index d9c3054..0882fd0 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 = "546721a1ea18c737910319dd278865008b3a2c75"
-    TFRT_SHA256 = "d90f07ab95dfb77d7fc8aa7d94aba27f31b731d123e6193ded08867b829fe407"
+    TFRT_COMMIT = "2bd2ed20df877095179360c7278f0dcd0e1ebc66"
+    TFRT_SHA256 = "36fbb83624aa572174c5b82305edf2b0deebfb8b5609e918336ccab03af8966e"
 
     tf_http_archive(
         name = "tf_runtime",