build(deps): bump js-yaml from 4.1.0 to 5.4.2 in /app

Bumps [js-yaml](https://github.com/nodeca/js-yaml) from 4.1.0 to 5.4.2.
- [Changelog](https://github.com/nodeca/js-yaml/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nodeca/js-yaml/compare/4.1.0...5.4.2)

---
updated-dependencies:
- dependency-name: js-yaml
  dependency-version: 5.4.2
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

app/package.json

@@ -26,7 +26,7 @@
     "electron-updater": "^5",
     "fontmanager-redux": "1.1.0",
     "glasstron": "0.1.1",
-    "js-yaml": "4.1.0",
+    "js-yaml": "5.4.2",
     "keytar": "^7",
     "mz": "^2",
     "native-process-working-directory": "^1",

app/yarn.lock

@@ -1080,10 +1080,10 @@ isexe@^4.0.0:
   resolved "https://registry.yarnpkg.com/isexe/-/isexe-4.0.0.tgz#48f6576af8e87a18feb796b7ed5e2e5903b43dca"
   integrity sha512-FFUtZMpoZ8RqHS3XeXEmHWLA4thH+ZxCv2lOiPIn1Xc7CxrqhWzNSDzD+/chS/zbYezmiwWLdQC09JdQKmthOw==
 
-js-yaml@4.1.0:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-4.1.0.tgz#c1fb65f8f5017901cdd2c951864ba18458a10602"
-  integrity sha512-wpxZs9NoxZaJESJGIZTyDEaYpl0FKSA+FB9aJiyemKhMwkxQg63h4T1KJgUGHpTqPDNRcmmYLugrRjJlBtWvRA==
+js-yaml@5.4.2:
+  version "5.4.2"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-5.4.2.tgz#eebc7a57e0bbe1d6b6d9416a72e7463082c7da85"
+  integrity sha512-m+aqu+LwO1O6sIopafj8HUVl5aawITwZQe/yHpMCKjaWBaA/d07B/QdMb3529REftiU+RMMHL3Vlsw3hON7vWg==
   dependencies:
     argparse "^2.0.1"