[Deps] Bumped the protobuf commit to b2b7a511 (#34330)

This is to have https://github.com/protocolbuffers/protobuf/pull/14054
which is required to make abseil-at-head test pass.

bazel/grpc_deps.bzl

@@ -243,12 +243,12 @@ def grpc_deps():
     if "com_google_protobuf" not in native.existing_rules():
         http_archive(
             name = "com_google_protobuf",
-            sha256 = "c580129f1db37f0ba8b80808b530593b89187b0d5573e9471396d0513aacfee4",
-            strip_prefix = "protobuf-0d22de520bf3fdb0978a962ae90b72db2f560cef",
+            sha256 = "660ce016f987550bc1ccec4a6ee4199afb871799b696227098e3641476a7d566",
+            strip_prefix = "protobuf-b2b7a51158418f41cff0520894836c15b1738721",
             urls = [
                 # https://github.com/protocolbuffers/protobuf/commits/v24.3
-                "https://storage.googleapis.com/grpc-bazel-mirror/github.com/protocolbuffers/protobuf/archive/0d22de520bf3fdb0978a962ae90b72db2f560cef.tar.gz",
-                "https://github.com/protocolbuffers/protobuf/archive/0d22de520bf3fdb0978a962ae90b72db2f560cef.tar.gz",
+                "https://storage.googleapis.com/grpc-bazel-mirror/github.com/protocolbuffers/protobuf/archive/b2b7a51158418f41cff0520894836c15b1738721.tar.gz",
+                "https://github.com/protocolbuffers/protobuf/archive/b2b7a51158418f41cff0520894836c15b1738721.tar.gz",
             ],
             patches = [
                 "@com_github_grpc_grpc//third_party:protobuf.patch",

third_party/protobuf

@@ -1 +1 @@
-Subproject commit 0d22de520bf3fdb0978a962ae90b72db2f560cef
+Subproject commit b2b7a51158418f41cff0520894836c15b1738721

tools/distrib/python/grpcio_tools/protoc_lib_deps.py

@@ -315,4 +315,4 @@ CC_INCLUDES=[
 ]
 PROTO_INCLUDE='third_party/protobuf/src'
 
-PROTOBUF_SUBMODULE_VERSION="0d22de520bf3fdb0978a962ae90b72db2f560cef"
+PROTOBUF_SUBMODULE_VERSION="b2b7a51158418f41cff0520894836c15b1738721"

tools/run_tests/sanity/check_submodules.sh

@@ -35,7 +35,7 @@ third_party/googleapis 2f9af297c84c55c8b871ba4495e01ade42476c92
 third_party/googletest 0e402173c97aea7a00749e825b194bfede4f2e45
 third_party/opencensus-proto 4aa53e15cbf1a47bc9087e6cfdca214c1eea4e89
 third_party/opentelemetry 60fa8754d890b5c55949a8c68dcfd7ab5c2395df
-third_party/protobuf 0d22de520bf3fdb0978a962ae90b72db2f560cef
+third_party/protobuf b2b7a51158418f41cff0520894836c15b1738721
 third_party/protoc-gen-validate fab737efbb4b4d03e7c771393708f75594b121e4
 third_party/re2 0c5616df9c0aaa44c9440d87422012423d91c7d1
 third_party/upb 42cd08932e364a4cde35033b73f15c30250d7c2e