Fix grpc compilation with LLVM 19

It currently fails with 1

/home/tango/dependencies/gRPC/src/core/lib/promise/detail/basic_seq.h:103:38: error: a template argument list is expected after a name prefixed by the template keyword [-Wmissing-template-arg-list-after-template-kw] 103 | Traits::template CallSeqFactory(f_, *cur_, std::move(arg)));

but is also already fixed upstream, so let's use that patch.