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/gd.svg

@@ -24,4 +24,4 @@
   <use xlink:href="#gd-d" width="100%" height="100%" x="-100" transform="translate(-30.3 414.6)"/>
   <use xlink:href="#gd-c" width="100%" height="100%" transform="translate(320 448.2)scale(31.2)"/>
   <use xlink:href="#gd-d" width="100%" height="100%" x="100" transform="translate(30.3 414.6)"/>
-</svg>
+</svg>