clang-format: update to latest from docs repo

This is from openbmc/docs/style/cpp/.clang-format

Other OpenBMC repos are doing the same.

Tested: Built and validator passed.
Change-Id: Ief26c755c9ce012823e16a506342b0547a53517a
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/src/token_authorization_middleware_test.cpp b/src/token_authorization_middleware_test.cpp
index 8f4c5c8..3ac7947 100644
--- a/src/token_authorization_middleware_test.cpp
+++ b/src/token_authorization_middleware_test.cpp
@@ -16,8 +16,7 @@
     TokenAuth() :
         lk(std::unique_lock<std::mutex>(m)),
         io(std::make_shared<boost::asio::io_context>())
-    {
-    }
+    {}
 
     std::mutex m;
     std::condition_variable cv;