all: update codereview.cfg for gopls-release-branch.0.11

For golang/go#57092

Change-Id: I2b47c35ff995c1697df8db93d8765cfa267f39c3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/455163
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
Auto-Submit: Robert Findley <rfindley@google.com>
diff --git a/codereview.cfg b/codereview.cfg
index 3f8b14b..519ff19 100644
--- a/codereview.cfg
+++ b/codereview.cfg
@@ -1 +1,3 @@
 issuerepo: golang/go
+branch: gopls-release-branch.0.11
+parent-branch: master