[libc++] Fix path to versioned clang-format in the CI job

NOKEYCHECK=True
GitOrigin-RevId: 5206e66a504280a805d2ebe05f8b666944a69c6a
diff --git a/utils/ci/buildkite-pipeline.yml b/utils/ci/buildkite-pipeline.yml
index 2722286..cd4adb8 100644
--- a/utils/ci/buildkite-pipeline.yml
+++ b/utils/ci/buildkite-pipeline.yml
@@ -36,7 +36,7 @@
     artifact_paths:
       - "**/clang-format.patch"
     env:
-        GIT_CLANG_FORMAT: "/usr/bin/git-clang-format-${LLVM_STABLE_VERSION}"
+        GIT_CLANG_FORMAT: "/usr/bin/git-clang-format-${LLVM_STABLE_VERSION} --binary clang-format-${LLVM_STABLE_VERSION}"
         CC: "clang-${LLVM_HEAD_VERSION}"
         CXX: "clang++-${LLVM_HEAD_VERSION}"
     agents: