Update dependency vue to v3.5.21

Author: dependencyupdates[bot]

src/Frontend/package-lock.json

@@ -39,7 +39,7 @@
     "memoize-one": "6.0.0",
     "moment": "2.30.1",
     "pinia": "3.0.3",
-    "vue": "3.5.20",
+    "vue": "3.5.21",
     "vue-codemirror6": "1.3.22",
     "vue-router": "4.5.1",
     "vue-tippy": "6.7.1",