Bump swiftmailer/swiftmailer from 6.2.4 to 6.2.5

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

diff --git a/3rdparty b/3rdparty
index 58de61cb777fe44d69373e4f6636206562a675cb..22b98a4f7961cb423f2c27dd66c1c98ad901aeb6 160000 (submodule)
--- a/3rdparty
+++ b/3rdparty
@@ -1 +1 @@
-Subproject commit 58de61cb777fe44d69373e4f6636206562a675cb
+Subproject commit 22b98a4f7961cb423f2c27dd66c1c98ad901aeb6