chore(deps-dev): bump js-yaml from 3.14.1 to 3.15.2 in /website

Bumps [js-yaml](https://github.com/nodeca/js-yaml) from 3.14.1 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/3.14.1...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>

website/package-lock.json

@@ -7334,9 +7334,9 @@
       "license": "MIT"
     },
     "node_modules/js-yaml": {
-      "version": "3.14.1",
+      "version": "3.15.2",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.1.tgz",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.15.2.tgz",
-      "integrity": "sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==",
+      "integrity": "sha512-6EuL879VkRA+1Cz578mKMiKvjPNEuk6+r1JaFzoSWejZmtf7xWbIyw1e3KkxlkzTIt9Taw6JBhEppG7utc1P+w==",
       "dev": true,
       "license": "MIT",
       "dependencies": {

website/yarn.lock

@@ -3629,8 +3629,8 @@ jpegtran-bin@^4.0.0:
   resolved "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz"
 
 js-yaml@^3.13.1, js-yaml@^3.8.1:
-  version "3.14.1"
+  version "3.15.2"
-  resolved "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.1.tgz"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.15.2.tgz#3f83823ac6be17f570f23b2ecdef3777ff5ea364"
   dependencies:
     argparse "^1.0.7"
     esprima "^4.0.0"