[emacs] Update 2 drones

Update helm      to v3.0-73-gd27efee1
Update pdf-tools to v0.80-147-ga4cd69e

diff --git a/lib/helm b/lib/helm
index 03f293d..d27efee 160000 (submodule)
--- a/lib/helm
+++ b/lib/helm
@@ -1 +1 @@
-Subproject commit 03f293db6f3ecfc90a56a48c1ec4fc8f0d9d31dc
+Subproject commit d27efee1002e6afc31b0fea9e4c14fe6330d8437

diff --git a/lib/pdf-tools b/lib/pdf-tools
index c41694f..a4cd69e 160000 (submodule)
--- a/lib/pdf-tools
+++ b/lib/pdf-tools
@@ -1 +1 @@
-Subproject commit c41694fb198e644b3da03917e6792c71cf0c81dc
+Subproject commit a4cd69ea1d50b8e74ea515eec95948ad87c6c732