Wpf/WinForms: Update WebView2 to latest · picoe/Eto@c43d64e

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, actions/upload-artifact@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

'Threads.Enter()' is obsolete

'Display.DeviceManager' is obsolete

'DeviceManager.ClientPointer' is obsolete

'Device.Grab(Window, GrabOwnership, bool, EventMask, Cursor, uint)' is obsolete

'Display.DeviceManager' is obsolete

'DeviceManager.ClientPointer' is obsolete

'Device.Ungrab(uint)' is obsolete

'StyleContext.GetFont(StateFlags)' is obsolete

'Widget.OverrideFont(FontDescription)' is obsolete

'StyleContext.GetBackgroundColor(StateFlags)' is obsolete

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