chore(gui-v2): replace deep selector with non-deprecated version

packages/nc-gui-v2/components/general/Language.vue

@@ -59,14 +59,13 @@ onMounted(() => {
 </template>
 
 <style scoped lang="scss">
-::v-deep {
+:deep(.nc-language-list) {
-  .nc-language-list {
   min-width: 200px;
   max-height: 90vh;
   overflow: auto;
+
   .v-list-item {
     min-height: 30px !important;
   }
 }
-}
 </style>