Updates borger: a10069f Ask the passphrase only once and be verbose when asking

diff --git a/borger b/borger
index 1933bbd450f9acb9d7281d9e5cb34437f8b27179..a10069fbe13127bd5c08be54df948f4f206cbe2f 160000 (submodule)
--- a/borger
+++ b/borger
@@ -1 +1 @@
-Subproject commit 1933bbd450f9acb9d7281d9e5cb34437f8b27179
+Subproject commit a10069fbe13127bd5c08be54df948f4f206cbe2f