version 0.2.6 - update yarnspinner core to 2.4.2, fix fadeTime issue in optionsListView, fix empty yarn project inspector bugs

[dogboydog]

• Fix Can't interact with the options list view if fade time is zero #53 where the first OptionView in an OptionsListView could not be interacted with if fadeTime was zero
• Update YarnSpinner core DLL files to version 2.4.2
  • Updated dependency versions:
    • Google.Protobuf: Moved from 3.15.0 to 3.25.2.
    • Microsoft.Extensions.FileSystemGlobbing: Moved from 7.0.0 to 8.0.0
  • Standard library functions (e.g. random, round_places, dice) have been removed from Yarn Spinner for Godot, since they have been added directly to the core Yarn Spinner library.
• Fix Cannot remove empty Localization CSV entry (LocaleDeleteButton > System.NullReferenceException) #55 where Yarn projects with no scripts added / compiled yet threw exceptions when locale related or 'export strings' were pressed
  Example of an empty yarn project successfully storing locale codes, and disabling the 'export strings' button.