feat: update UI5 Web Components to 2.0.0 (#6023)

BREAKING CHANGE: updated UI5 Web Components to v2. All [breaking changes](https://sap.github.io/ui5-webcomponents/docs/migration-guides/to-version-2/) apply to this project as well.
BREAKING CHANGE: the `SuggestionGroupItem` component has been replaced by the `SuggestionItemGroup` component

Author: MarcusNotheis

.storybook/custom-element-manifests/fiori.json

@@ -55,7 +55,7 @@ export function useGetCem() {
 
 const replaceSubComps = {
   ListItemBase: ['ListItemStandard', 'ListItemCustom', 'ListItemGroup'],
-  InputSuggestionItem: ['SuggestionItem', 'SuggestionGroupItem'],
+  InputSuggestionItem: ['SuggestionItem', 'SuggestionItemGroup'],
   NotificationListItemBase: ['NotificationListItem'],
   ToolbarItem: ['ToolbarSeparatorV2', 'ToolbarSpacerV2', 'ToolbarButton', 'ToolbarSelect', 'ToolbarSelectOption'],
   TreeItemBase: ['TreeItem', 'TreeItemCustom'],