[lucicfg] Update lucicfg to 1.11.12

Includes crrev.com/c/1917840, which updates the api for luci_notify.

Bug: 10046

Change-Id: I9c57eb489dce0f4d60d1c26f4c2dd137fc5555f4
diff --git a/cipd.ensure b/cipd.ensure
index 401a0fc..856e8e1 100644
--- a/cipd.ensure
+++ b/cipd.ensure
@@ -30,7 +30,7 @@
 infra/tools/luci-auth/${platform} git_revision:1c424ea982c1f7e165c6e9c19a4517970d5885f4
 
 # Lucicfg tool
-infra/tools/luci/lucicfg/${platform}  git_revision:6a2840ce0e1e2017f67c38798798c68b379889ac
+infra/tools/luci/lucicfg/${platform}  git_revision:9752329002811a33ae188d6ba602243237a1d447
 
 # vpython
 infra/tools/luci/vpython/${platform} git_revision:1c424ea982c1f7e165c6e9c19a4517970d5885f4