package-lock.json: update json-schema to 0.4.0

% npm list json-schema
[email protected] /Users/hakim/projects/google/vscode-go
└─┬ [email protected]
  └─┬ [email protected]
    └─┬ [email protected]
      └─┬ [email protected]
        └── [email protected]

json-schema  <0.4.0
Severity: moderate
json-schema is vulnerable to Prototype Pollution - GHSA-896r-f27r-55mw
fix available via `npm audit fix`
node_modules/json-schema
  jsprim  0.3.0 - 1.4.1 || 2.0.0 - 2.0.1
  Depends on vulnerable versions of json-schema
  node_modules/jsprim

Affecting json-schema and jsprim versions.

Change-Id: I98522e761361537590a62c0f16d85bfc73eed0c3
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/369740
Trust: Hyang-Ah Hana Kim <[email protected]>
Run-TryBot: Hyang-Ah Hana Kim <[email protected]>
TryBot-Result: kokoro <[email protected]>
Reviewed-by: Robert Findley <[email protected]>

Author: hyangah