Keep redemption working on Jellyfin 10.11.9 and later (#20)

Jellyfin 10.11.9 changed IUserManager.ChangePassword to take the user id
instead of the User. A call compiled against either signature throws
MissingMethodException on the other, so look up whichever one the server
has and call it through a delegate. Bumps to 1.0.5.0.

Jellyfin.Plugin.ShareLinks/Services/JellyfinGuestUserService.cs

@@ -90,7 +90,7 @@ public sealed class JellyfinGuestUserService
         // policy hands the account to GuestAuthenticationProvider, which refuses every
         // interactive sign-in - but it means the account is never reachable with a blank
         // password either.
-        await _userManager.ChangePassword(user, password).ConfigureAwait(false);
+        await _userManager.ChangePasswordAsync(user, password).ConfigureAwait(false);
         await ApplyPolicyAsync(user, record, disabled: false).ConfigureAwait(false);
 
         user = _userManager.GetUserById(user.Id) ?? user;