Update protobuf version for tf-keras.

PiperOrigin-RevId: 775884932

Author: hertschuh

.bazelversion

@@ -1 +1 @@
-5.4.0
+7.4.1

WORKSPACE

@@ -3,7 +3,6 @@ workspace(name = "org_keras")
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 # Needed by protobuf
-load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 http_archive(
     name = "bazel_skylib",
     urls = [
@@ -15,6 +14,21 @@ http_archive(
 load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")
 bazel_skylib_workspace()
 
+http_archive(
+    name = "rules_python",
+    sha256 = "8c8fe44ef0a9afc256d1e75ad5f448bb59b81aba149b8958f02f7b3a98f5d9b4",
+    strip_prefix = "rules_python-0.13.0",
+    url = "https://github.com/bazelbuild/rules_python/archive/refs/tags/0.13.0.tar.gz",
+)
+
+load("@rules_python//python:repositories.bzl", "python_register_toolchains")
+
+python_register_toolchains(
+    name = "python3_10",
+    python_version = "3.10",
+    ignore_root_user_error = True,
+)
+
 # Needed by protobuf
 http_archive(
     name = "six_archive",
@@ -31,9 +45,9 @@ bind(
 
 http_archive(
     name = "com_google_protobuf",
-    sha256 = "f66073dee0bc159157b0bd7f502d7d1ee0bc76b3c1eac9836927511bdc4b3fc1",
-    strip_prefix = "protobuf-3.21.9",
-    urls = ["https://github.com/protocolbuffers/protobuf/archive/v3.21.9.zip"],
+    sha256 = "f645e6e42745ce922ca5388b1883ca583bafe4366cc74cf35c3c9299005136e2",
+    strip_prefix = "protobuf-5.28.3",
+    urls = ["https://github.com/protocolbuffers/protobuf/archive/v5.28.3.zip"],
 )
 
 # ZLIB. Need by com_google_protobuf.

requirements.txt

@@ -3,12 +3,6 @@
 pandas
 pydot
 scipy
-# Remove once both TensorFlow and TF-Keras nightly builds pass.
-# Temporarily enforce 4.21.6 version, as the only version which is compatible
-# with both new and old protobuf stubs. This is needed to resolve
-# Keras-TensorFlow circular dependency issue, when one of them gets a dependency
-# incompatible with another one (protobuf in this specific case).
-protobuf==4.21.6
 tf-nightly
 portpicker
 pyyaml