Updates keyringer: dfb8f1a Fix: CI: test: set upstream Git branches

diff --git a/keyringer b/keyringer
index 682291219781a1a173951c9f2e931714d52ef829..dfb8f1aeed18712bd3fb6949c4a25a449b689d03 160000 (submodule)
--- a/keyringer
+++ b/keyringer
@@ -1 +1 @@
-Subproject commit 682291219781a1a173951c9f2e931714d52ef829
+Subproject commit dfb8f1aeed18712bd3fb6949c4a25a449b689d03