gopls: update go.mod for gopls/v0.4.1-pre2

Change-Id: I3a682c32d7fd26912f4ce46f6ab562939d75fc4a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/233358
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
diff --git a/gopls/go.mod b/gopls/go.mod
index e4f8426..5f3bdbb 100644
--- a/gopls/go.mod
+++ b/gopls/go.mod
@@ -4,7 +4,7 @@
 
 require (
 	github.com/sergi/go-diff v1.1.0
-	golang.org/x/tools v0.0.0-20200507174705-50c062a2b64a
+	golang.org/x/tools v0.0.0-20200511201605-7a6cbdc4e8f0
 	honnef.co/go/tools v0.0.1-2020.1.3
 	mvdan.cc/xurls/v2 v2.1.0
 )