[emacs] update 7 drones, remove meghanada, note lsp-java deps

[~bandali/configs] / lib / slack

diff --git a/lib/slack b/lib/slack
index ef3956a..b853a34 160000 (submodule)
--- a/lib/slack
+++ b/lib/slack
@@ -1 +1 @@
-Subproject commit ef3956a80c5521b5fb91e65947ab0af40222b10d
+Subproject commit b853a34dbe21a869af1ed353dffe0de2dea2f049