Updates Bazel dep to 2.8.0.

PiperOrigin-RevId: 480956221

Author: mihirparadkar

package/tfdep.bzl

@@ -3,12 +3,12 @@
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 def tf_setup():
-    """Define tensorflow>=2.6.0 dependency for Bazel build."""
+    """Define tensorflow>=2.8.0 dependency for Bazel build."""
     http_archive(
         name = "org_tensorflow",
-        sha256 = "41b32eeaddcbc02b0583660bcf508469550e4cd0f86b22d2abe72dfebeacde0f",
+        sha256 = "66b953ae7fba61fd78969a2e24e350b26ec116cf2e6a7eb93d02c63939c6f9f7",
         urls = [
-            "https://github.com/tensorflow/tensorflow/archive/refs/tags/v2.6.0.tar.gz",
+            "https://github.com/tensorflow/tensorflow/archive/refs/tags/v2.8.0.tar.gz",
         ],
-        strip_prefix = "tensorflow-2.6.0",
+        strip_prefix = "tensorflow-2.8.0",
     )