[release] package-lock.json: npm audit fix

npm audit fix
npm WARN deprecated fsevents@1.2.13: fsevents 1 will break on node v14+ and could be using insecure binaries. Upgrade to fsevents 2.
npm WARN deprecated chokidar@2.1.8: Chokidar 2 will break on node v14+. Upgrade to chokidar 3 with 15x less dependencies.

changed 1 package, and audited 896 packages in 6s

Change-Id: Iab4456496ee356407a70736baa5679f34c94040f
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/300151
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
TryBot-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Suzy Mueller <suzmue@golang.org>
(cherry picked from commit bf643069aecdcd323cd4a869cd17527581c1334b)
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/300569

Author: hyangah