Bump sweetalert2 from 8.18.5 to 8.18.6 in /app (#149)

Bumps [sweetalert2](https://github.com/sweetalert2/sweetalert2) from 8.18.5 to 8.18.6.
- [Release notes](https://github.com/sweetalert2/sweetalert2/releases)
- [Changelog](https://github.com/sweetalert2/sweetalert2/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sweetalert2/sweetalert2/compare/v8.18.5...v8.18.6)

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

app/package.json

@@ -58,7 +58,7 @@
     "json5": "^2.1.1",
     "materialize-css": "^1.0.0",
     "sumchecker": "^3.0.0",
-    "sweetalert2": "^8.18.5",
+    "sweetalert2": "^8.18.6",
     "vue": "^2.6.10"
   },
   "optionalDependencies": {

app/yarn.lock

@@ -2770,10 +2770,10 @@ supports-color@^5.3.0:
   dependencies:
     has-flag "^3.0.0"
 
-sweetalert2@^8.18.5:
-  version "8.18.5"
-  resolved "https://registry.yarnpkg.com/sweetalert2/-/sweetalert2-8.18.5.tgz#ed6a9e4647026333de8e7cc0df02f61ec5bb850f"
-  integrity sha512-GTP24XbiLqdT/Sd+lYac/bQLEJKqzWldV63hvyqPdWcqRimsDRSsumhWL3yyzLvqXMIwzoVbqpa1kWgg2/fm0g==
+sweetalert2@^8.18.6:
+  version "8.18.6"
+  resolved "https://registry.yarnpkg.com/sweetalert2/-/sweetalert2-8.18.6.tgz#9df053369cb2b4ae0b955280505bf0cad0f8c4fe"
+  integrity sha512-6Jio6FH3p5hm+VHYN8mUyGhGozVo+r+eJtkUC/+bvSpXss84hcMRXNqKQs+J1+LWPy2DT7ozdyVXaVY6sMnm+w==
 
 tar@^4.4.12:
   version "4.4.13"