Bump js-yaml from 3.8.2 to 3.13.1 in /server

Bumps [js-yaml](https://github.com/nodeca/js-yaml) from 3.8.2 to 3.13.1.
- [Release notes](https://github.com/nodeca/js-yaml/releases)
- [Changelog](https://github.com/nodeca/js-yaml/blob/master/CHANGELOG.md)
- [Commits](nodeca/js-yaml@3.8.2...3.13.1)

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

Author: dependabot[bot]

server/package-lock.json

@@ -43,7 +43,7 @@
     "jenkins-api": "0.2.6",
     "jira": "0.9.2",
     "joi": "8.0.5",
-    "js-yaml": "3.8.2",
+    "js-yaml": "3.13.1",
     "json2csv": "3.6.3",
     "json2yaml": "^1.1.0",
     "jsonwebtoken": "6.2.0",