Updating nextcloud dependency, fixing upload and pub dep error

lib/webdavtest.dart

@@ -1,30 +0,0 @@
-import 'dart:io';
-import 'package:nextcloud/nextcloud.dart';
-
-// NOT WORKING curl -H 'Transfer-Encoding: chunked' -H 'Content-Type: image/png' --compressed -u goldbaja -T /home/elias/Bilder/robotikmeme.png https://cloud.marianum-fulda.de/remote.php/webdav/some-image.png
-// WORKS curl -H 'Transfer-Encoding: chunked' -H 'Content-Type: image/png' --compressed -u minetec -T /home/elias/Bilder/robotikmeme.png https://mhsl.eu/cloud/remote.php/webdav/some-image.png
-
-void main() async {
-  print("HELLO WORLD");
-  WebDavClient client = NextcloudClient("https://cloud.marianum-fulda.de", username: "xxx", password: "xxx", loginName: "xxx").webdav;
-
-  final fileBytes = File("/home/elias/Bilder/robotikmeme.png").readAsBytesSync();
-
-  print(fileBytes.length);
-
-  HttpClientResponse response = await client.upload(fileBytes, "menue/test.png");
-  print(response.statusCode);
-
-  await Future.delayed(const Duration(seconds: 5)); // Wait a bit, just in case
-
-  final responses = (await client.ls(
-    '/menue/',
-    prop: WebDavPropfindProp.fromBools(
-      ocsize: true,
-    ),
-  )).responses;
-
-  print("Filesize local: ${fileBytes.length}");
-  print("Filesize on Server: ${responses.singleWhere((final response) => response.href!.endsWith('/menue/test.png')).propstats.first.prop.ocsize}");
-
-}