Clean up SVG files and update logos

- Removed unnecessary XML and DOCTYPE declarations from SVG files.
- Eliminated comments within SVG files for cleaner output.
- Trimmed leading and trailing whitespace from SVG content.
- Ensured all SVG files end with a newline character.
- Updated multiple logo SVG files including WireGuard, Wise, WOG, Yahoo, and others to conform to the new standards.
- Enhanced the update-data.js script to automate the cleanup process for SVG files.

public/images/flags/gl.svg

@@ -1,4 +1,4 @@
 <svg xmlns="http://www.w3.org/2000/svg" id="flag-icons-gl" viewBox="0 0 640 480">
   <path fill="#fff" d="M0 0h640v480H0z"/>
   <path fill="#d00c33" d="M0 240h640v240H0zm80 0a160 160 0 1 0 320 0 160 160 0 0 0-320 0"/>
-</svg>
+</svg>