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/kz.svg

@@ -33,4 +33,4 @@
       <use xlink:href="#kz-f" width="100%" height="100%" transform="matrix(1 0 0 -1 0 1000)"/>
     </g>
   </g>
-</svg>
+</svg>