Updated SVG for Thumbs Up & Thumbs Down

[sergree]

Fingernails are now removed in Default > Color SVG files. It is very likely that they were there by mistake.

Current Default > Color (Wrong):

Edited Default > Color (Correct):

Nails are already missing in other variants, such as Dark, Light, Medium, Medium-dark, Medium-light. Nails are also already missing in the rendered Default > 3D files.

Current Medium > Color (Correct):

It turns out that their presence in Default > Color is erroneous.

This PR removes incorrect nails (looking like artifacts) from two SVG files:

• Thumbs up > Default > Color
• Thumbs down > Default > Color