Build: Bump tf-m-tests dependency

Signed-off-by: Gergely Korcsák <gergely.korcsak@arm.com>
Change-Id: I79fe2ad12b3fd931cff58b9acdf1cfdaacbb56f3
diff --git a/lib/ext/tf-m-tests/version.txt b/lib/ext/tf-m-tests/version.txt
index b9424f0..285098b 100644
--- a/lib/ext/tf-m-tests/version.txt
+++ b/lib/ext/tf-m-tests/version.txt
@@ -8,4 +8,4 @@
 # Developers should keep the version value up to date to make sure it fits current TF-M version.
 # TF-M does not rely on this file to build.
 
-version=bc5b662
+version=db4cf19