[gopls-release-branch.0.5] gopls: update go.mod for gopls/v0.5.3-pre.1

Change-Id: Ia909514f49131e8e7964ebdda664af2f35899c3f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/268537
Trust: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>

Author: stamblerre

gopls/go.mod

@@ -4,7 +4,7 @@ go 1.12
 
 require (
 	github.com/sergi/go-diff v1.1.0
-	golang.org/x/tools v0.0.0-20201021214918-23787c007979
+	golang.org/x/tools v0.0.0-20201109191606-39f1305f0b06
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1
 	honnef.co/go/tools v0.0.1-2020.1.6
 	mvdan.cc/gofumpt v0.0.0-20200927160801-5bfeb2e70dd6