Updated icons .import with default for new parameters in Godot 3.2

[hsandt]

I only opened my project in Godot 3.2 with the Visual Debugger installed, and a few parameters were automatically added:

• vram_texture
• bptc_ldr
• invert_color

[hsandt]

Slightly related, but the theme was also marked as changed every time I would save in Godot. I can't see the exact changes as the file is binary, but I assume it's also related to new parameters in Godot 3.1-3.2.