Fix collection update from native client

For some strange reason the native clients send `CollectionIds` instead of `collectionIds` for updating the collection.
Added an alias to allow this.

Fixes an issue reported via Matrix.

Signed-off-by: BlackDex <black.dex@gmail.com>

src/api/core/ciphers.rs

@@ -703,6 +703,7 @@ async fn put_cipher_partial(
 #[derive(Deserialize)]
 #[serde(rename_all = "camelCase")]
 struct CollectionsAdminData {
+    #[serde(alias = "CollectionIds")]
     collection_ids: Vec<String>,
 }