chore(3p/gerrit): update to latest upstream HEAD

Change-Id: Ia7b17ca83ace164881a4dd8b0288741489bc467c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2164
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>
Reviewed-by: tazjin <mail@tazj.in>

third_party/gerrit/0001-Use-detzip-in-download_bower.py.patch

@@ -1,7 +1,7 @@
-From c88d8c133d2f50451c7fb73592db4a000b87f15f Mon Sep 17 00:00:00 2001
+From b8e1242655d308377f28c9bfcca2fe578e7093bb Mon Sep 17 00:00:00 2001
 From: Luke Granger-Brown <git@lukegb.com>
 Date: Thu, 2 Jul 2020 23:02:09 +0100
-Subject: [PATCH 1/7] Use detzip in download_bower.py
+Subject: [PATCH 1/6] Use detzip in download_bower.py
 
 ---
  tools/js/download_bower.py | 2 +-
@@ -21,5 +21,5 @@ index 1df4b826bc..65bda74082 100755
  
          if args.s:
 -- 
-2.27.0
+2.29.2