awesome: update pomodoro submodule

diff --git a/awesome/widgets/pomodoro b/awesome/widgets/pomodoro
index 2b02f66d1ee0f99a3a084d918cabb3bdfd8d4f19..cfa88849c204277c459814969296305998c21225 160000 (submodule)
--- a/awesome/widgets/pomodoro
+++ b/awesome/widgets/pomodoro
@@ -1 +1 @@
-Subproject commit 2b02f66d1ee0f99a3a084d918cabb3bdfd8d4f19
+Subproject commit cfa88849c204277c459814969296305998c21225