gopls-release-branch.0.2: gopls: update go.mod for release (again)

Change-Id: I99a5d3b66c498ac86b00fcccbdba4229e4d00f66
Reviewed-on: https://go-review.googlesource.com/c/tools/+/210214
Reviewed-by: Heschi Kreinick <heschi@google.com>

gopls/go.mod

diff --git a/gopls/go.mod b/gopls/go.mod
index 4f12bbf..cccf448 100644
--- a/gopls/go.mod
+++ b/gopls/go.mod
@@ -5,7 +5,7 @@
 require (
 	github.com/sergi/go-diff v1.0.0
 	github.com/stretchr/testify v1.4.0 // indirect
-	golang.org/x/tools v0.0.0-20191206190119-8f1694653207
+	golang.org/x/tools v0.0.0-20191206201009-952e2c076240
 	honnef.co/go/tools v0.0.1-2019.2.3
 )