Bump luxon from 1.26.0 to 1.28.1

Bumps [luxon](https://github.com/moment/luxon) from 1.26.0 to 1.28.1.
- [Release notes](https://github.com/moment/luxon/releases)
- [Changelog](https://github.com/moment/luxon/blob/master/CHANGELOG.md)
- [Commits](moment/luxon@1.26.0...1.28.1)

---
updated-dependencies:
- dependency-name: luxon
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -17,7 +17,7 @@
     "axios": "^0.21.1",
     "extract-text-webpack-plugin": "^3.0.2",
     "js-cookie": "^2.2.1",
-    "luxon": "^1.26.0",
+    "luxon": "^1.28.1",
     "sweetalert2": "^8.19.0",
     "v-calendar": "^2.3.0",
     "vform": "^1.0.1",

yarn.lock

@@ -5848,10 +5848,10 @@ lru-cache@^6.0.0:
   dependencies:
     yallist "^4.0.0"
 
-luxon@^1.26.0:
-  version "1.26.0"
-  resolved "https://registry.npmjs.org/luxon/-/luxon-1.26.0.tgz"
-  integrity sha512-+V5QIQ5f6CDXQpWNICELwjwuHdqeJM1UenlZWx5ujcRMc9venvluCjFb4t5NYLhb6IhkbMVOxzVuOqkgMxee2A==
+luxon@^1.28.1:
+  version "1.28.1"
+  resolved "https://registry.yarnpkg.com/luxon/-/luxon-1.28.1.tgz#528cdf3624a54506d710290a2341aa8e6e6c61b0"
+  integrity sha512-gYHAa180mKrNIUJCbwpmD0aTu9kV0dREDrwNnuyFAsO1Wt0EVYSZelPnJlbj9HplzXX/YWXHFTL45kvZ53M0pw==
 
 make-dir@^3.0.0, make-dir@^3.0.2, make-dir@^3.1.0:
   version "3.1.0"