Bump @fortawesome/fontawesome-free from 5.15.1 to 5.15.2 in /app

Bumps [@fortawesome/fontawesome-free](https://github.com/FortAwesome/Font-Awesome) from 5.15.1 to 5.15.2.
- [Release notes](https://github.com/FortAwesome/Font-Awesome/releases)
- [Changelog](https://github.com/FortAwesome/Font-Awesome/blob/master/CHANGELOG.md)
- [Commits](https://github.com/FortAwesome/Font-Awesome/compare/5.15.1...5.15.2)

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

app/package.json

@@ -59,7 +59,7 @@
     ],
     "license": "GPL-3.0",
     "dependencies": {
-        "@fortawesome/fontawesome-free": "^5.15.1",
+        "@fortawesome/fontawesome-free": "^5.15.2",
         "@syuilo/aiscript": "^0.11.1",
         "electron-dl": "^3.0.2",
         "jimp": "^0.16.1",

app/yarn.lock

@@ -74,10 +74,10 @@
     minimatch "^3.0.4"
     strip-json-comments "^3.1.1"
 
-"@fortawesome/fontawesome-free@^5.15.1":
-  version "5.15.1"
-  resolved "https://registry.yarnpkg.com/@fortawesome/fontawesome-free/-/fontawesome-free-5.15.1.tgz#ccfef6ddbe59f8fe8f694783e1d3eb88902dc5eb"
-  integrity sha512-OEdH7SyC1suTdhBGW91/zBfR6qaIhThbcN8PUXtXilY4GYnSBbVqOntdHbC1vXwsDnX0Qix2m2+DSU1J51ybOQ==
+"@fortawesome/fontawesome-free@^5.15.2":
+  version "5.15.2"
+  resolved "https://registry.yarnpkg.com/@fortawesome/fontawesome-free/-/fontawesome-free-5.15.2.tgz#218cd7276ab4f9ab57cc3d2efa2697e6a579f25d"
+  integrity sha512-7l/AX41m609L/EXI9EKH3Vs3v0iA8tKlIOGtw+kgcoanI7p+e4I4GYLqW3UXWiTnjSFymKSmTTPKYrivzbxxqA==
 
 "@jimp/bmp@^0.16.1":
   version "0.16.1"