[release] package.json: sync gopls settings ([email protected])

Change-Id: If55c3a89cd28fd7ea7b7c022b98ec9b6c7b3fec1
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/554060
Commit-Queue: Hyang-Ah Hana Kim <[email protected]>
TryBot-Result: kokoro <[email protected]>
Reviewed-by: Robert Findley <[email protected]>
(cherry picked from commit b01b0b7)
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/556979
Auto-Submit: Hyang-Ah Hana Kim <[email protected]>
Run-TryBot: Hyang-Ah Hana Kim <[email protected]>

Author: hyangah