clang-format: update to latest from docs repo

Since `Cpp11` is an alias for `Latest` and we should tend towards using the
latest C++ standard, update the C++ standard to Latest.

https://github.com/llvm/llvm-project/commit/e5032567903de19962333c4bf7d2edceaf4f9824#diff-b49a097415dff2837d9626d422c58ba8R82
https://github.com/openbmc/docs/blob/master/style/cpp/.clang-format

Also, other OpenBMC repos are doing the same.

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I449e88bb4e1e262060110e1a8f3e8db3ddfc74cf
diff --git a/test/mocked_bios.hpp b/test/mocked_bios.hpp
index 568fad9..6741306 100644
--- a/test/mocked_bios.hpp
+++ b/test/mocked_bios.hpp
@@ -10,8 +10,7 @@
 {
   public:
     MockBIOSStringTable() : BIOSStringTable({})
-    {
-    }
+    {}
 
     MOCK_METHOD(uint16_t, findHandle, (const std::string&), (const override));