Bump js-yaml from 2.0.5 to 3.13.1 in /src/rpgawesome.font

Bumps [js-yaml](https://github.com/nodeca/js-yaml) from 2.0.5 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@2.0.5...3.13.1)

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

Author: dependabot[bot]

src/rpgawesome.font/package-lock.json

@@ -5,7 +5,7 @@
                     "ttf2eot": "~ 1.2.0",
                     "ttf2woff": "~ 1.0.1",
                     "svgo": "1.3.0",
-                    "js-yaml": "~ 2.0.5",
+                    "js-yaml": "~ 3.13.1",
                     "jade": "~ 0.30.0",
                     "stylus": "~ 0.32.1"
           }