web: bump to node 22, next 15, react 19, etc.

web/src/app/kontakt/page.tsx

@@ -33,7 +33,7 @@ const ContactIndexDefinition = graphql(`
 `);
 
 export async function generateMetadata(
-  { params }: { params: { url: string[] } },
+  { params }: { params: Promise<{}> },
   parent: ResolvingMetadata
 ): Promise<Metadata | null> {
   const { data, error } = await getClient().query(contactQuery, {});