[emacs] update 2 drones

Update magit       to v2.12.1-81-g47a054f8
Update use-package to v2.3-376-g0a2b82a

diff --git a/lib/magit b/lib/magit
index 9dc91ad..47a054f 160000 (submodule)
--- a/lib/magit
+++ b/lib/magit
@@ -1 +1 @@
-Subproject commit 9dc91ada33f321c12641d85ecb750143a6ba8adc
+Subproject commit 47a054f8fbb64736e8ee8abf8ba248b6fc8ec4f6

diff --git a/lib/use-package b/lib/use-package
index 512aa50..0a2b82a 160000 (submodule)
--- a/lib/use-package
+++ b/lib/use-package
@@ -1 +1 @@
-Subproject commit 512aa50b025018cb8574498d868814f73c02bb9b
+Subproject commit 0a2b82a508e27c28625487dc0a03a854fcb7e4b7