Bump js-yaml from 3.14.2 to 3.15.2 in /test

Bumps [js-yaml](https://github.com/nodeca/js-yaml) from 3.14.2 to 3.15.2.
- [Changelog](https://github.com/nodeca/js-yaml/blob/3.15.2/CHANGELOG.md)
- [Commits](https://github.com/nodeca/js-yaml/compare/3.14.2...3.15.2)

---
updated-dependencies:
- dependency-name: js-yaml
  dependency-version: 3.15.2
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

test/package-lock.json

@@ -3508,9 +3508,9 @@
       "license": "MIT"
     },
     "node_modules/js-yaml": {
-      "version": "3.14.2",
+      "version": "3.15.2",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.2.tgz",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.15.2.tgz",
-      "integrity": "sha512-PMSmkqxr106Xa156c2M265Z+FTrPl+oxd/rgOQy2tijQeK5TxQ43psO1ZCwhVOSdnn+RzkzlRz/eY4BgJBYVpg==",
+      "integrity": "sha512-6EuL879VkRA+1Cz578mKMiKvjPNEuk6+r1JaFzoSWejZmtf7xWbIyw1e3KkxlkzTIt9Taw6JBhEppG7utc1P+w==",
       "dev": true,
       "license": "MIT",
       "dependencies": {