Update serialization library to 0.60 version

Signed-off-by: Eric Kunze <eric.kunze@arm.com>
Change-Id: I2919607a4a625dd0fabab176b9452e21e937563b
diff --git a/third_party/serialization_lib b/third_party/serialization_lib
index 2cae60f..fb90dd4 160000
--- a/third_party/serialization_lib
+++ b/third_party/serialization_lib
@@ -1 +1 @@
-Subproject commit 2cae60f49b9153f9844964310011889e44a5002c
+Subproject commit fb90dd4f9e884715095674001d832321362f3e21