bazel: update deps

* don't use repo name
* Bump abseil-cpp to 20250512.0
* Bump Protobuf to 31.0
* Bump benchmark to 1.9.2
* Bump googletest to 1.17.0

ortools/math_opt/python/BUILD.bazel

@@ -560,7 +560,7 @@ py_library(
     name = "normalize",
     srcs = ["normalize.py"],
     visibility = ["//ortools/math_opt/python:__subpackages__"],
-    deps = ["@com_google_protobuf//:protobuf_python"],
+    deps = ["@protobuf//:protobuf_python"],
 )
 
 py_test(

ortools/math_opt/python/ipc/BUILD.bazel

@@ -24,7 +24,7 @@ py_library(
         requirement("requests"),
         "//ortools/math_opt:rpc_py_pb2",
         "//ortools/math_opt/python:mathopt",
-        "@com_google_protobuf//:protobuf_python",
+        "@protobuf//:protobuf_python",
     ],
 )
 
@@ -35,6 +35,6 @@ py_library(
         "//ortools/math_opt:rpc_py_pb2",
         "//ortools/math_opt/python:normalize",
         "//ortools/service/v1:optimization_py_pb2",
-        "@com_google_protobuf//:protobuf_python",
+        "@protobuf//:protobuf_python",
     ],
 )

ortools/math_opt/python/testing/BUILD.bazel

@@ -23,7 +23,7 @@ py_library(
     deps = [
         requirement("absl-py"),
         "//ortools/math_opt/python:normalize",
-        "@com_google_protobuf//:protobuf_python",
+        "@protobuf//:protobuf_python",
     ],
 )
 
@@ -44,7 +44,7 @@ py_library(
     srcs = ["proto_matcher.py"],
     deps = [
         "//ortools/math_opt/python:normalize",
-        "@com_google_protobuf//:protobuf_python",
+        "@protobuf//:protobuf_python",
     ],
 )