Updates borger: b7e7cda Increase default interval to 2h

diff --git a/borger b/borger
index ae6cb0f45884149ea2a30718dd8959156b0bbc89..b7e7cdac5d333cf8a58856e779fb16a5e77d78e3 160000 (submodule)
--- a/borger
+++ b/borger
@@ -1 +1 @@
-Subproject commit ae6cb0f45884149ea2a30718dd8959156b0bbc89
+Subproject commit b7e7cdac5d333cf8a58856e779fb16a5e77d78e3