[bazel] Add explicit dep on protobuf (llvm#168928)

This is required for correctly loading the protobuf rules. It's
possible we could drop the version here to a lower version, as long as
that version supports the versions of bazel we support. I picked this
because it is the current version being used by bazel 8.0.0 (which is
defined in the .bazelversion). Users can override this in their project
anyways if they need an older one

Author: keith

utils/bazel/MODULE.bazel

@@ -3,34 +3,35 @@
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
 """bzlmod configuration for llvm-project"""
+
 module(name = "llvm-project-overlay")
 
 bazel_dep(name = "apple_support", version = "1.24.1", repo_name = "build_bazel_apple_support")
 bazel_dep(name = "bazel_skylib", version = "1.8.2")
 bazel_dep(name = "platforms", version = "1.0.0")
+bazel_dep(name = "protobuf", version = "31.1", repo_name = "com_google_protobuf")
 bazel_dep(name = "rules_android", version = "0.6.6")
 bazel_dep(name = "rules_cc", version = "0.2.11")
 bazel_dep(name = "rules_foreign_cc", version = "0.15.1")
 bazel_dep(name = "rules_python", version = "1.6.3")
 bazel_dep(name = "rules_shell", version = "0.6.1")
 
 llvm_repos_extension = use_extension(":extensions.bzl", "llvm_repos_extension")
-
 use_repo(
     llvm_repos_extension,
+    "gmp",
     "llvm-raw",
     "llvm_zlib",
-    "vulkan_headers",
-    "vulkan_sdk",
-    "gmp",
-    "mpfr",
+    "llvm_zstd",
     "mpc",
+    "mpfr",
+    "nanobind",
     "pfm",
-    "llvm_zstd",
     "pybind11",
     "pyyaml",
     "robin_map",
-    "nanobind",
+    "vulkan_headers",
+    "vulkan_sdk",
 )
 
 llvm_configure = use_repo_rule("@llvm-raw//utils/bazel:configure.bzl", "llvm_configure")