package-lock.json: update all dependencies

Figured we should get the latest minor versions for the 0.15 release.
Generated with "npm install --package-lock".

Also addresses microsoft/vscode-go#3261.

Change-Id: I284ac65a94716a39fb2bb8fedb09db081c939c31
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/236839
Reviewed-by: Hyang-Ah Hana Kim <[email protected]>

Author: stamblerre