Bump giggsey/libphonenumber-for-php from 8.12.4 to 8.12.16

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

diff --git a/3rdparty b/3rdparty
index 3faef8dfa15d0b946759bdb888d5b245de6fb524..204a6cf055879d186275c11f7d847711b9eb4882 160000 (submodule)
--- a/3rdparty
+++ b/3rdparty
@@ -1 +1 @@
-Subproject commit 3faef8dfa15d0b946759bdb888d5b245de6fb524
+Subproject commit 204a6cf055879d186275c11f7d847711b9eb4882