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/li.svg

@@ -40,4 +40,4 @@
       <path d="m150.1 212.7 2 6.1m2-7.3 1.8 6.2m2.6-7 1.2 6.4m2.8-7.1 1.3 6.3m3.8-6.8 1 6.4m4.5-6.4 1.1 6.3m4.3-8.1.8 6.4m4.2-6.1.8 6.4m4.1-7 .8 6.4m4-7 .5 6.5m4.8-6.5.4 6.5m4.4-6.8.3 6.5m4.9-6.8.3 6.4m5.7-6.6.3 6.5m79 .2-2 6.1m-2-7.3-1.7 6.2m-2.6-7-1.2 6.4m-2.8-7.1-1.3 6.3m-4-6.8-1 6.4m-4.4-6.4-1.1 6.4m-4.2-8.2-.8 6.4m-4.3-6.1-.8 6.4m-4-7-.9 6.4m-4-7-.5 6.5m-4.8-6.5-.4 6.5m-4.3-6.8-.3 6.5m-5-6.8-.2 6.4m-5.8-6.6-.2 6.5m-7.2-7v7.2"/>
     </g>
   </g>
-</svg>
+</svg>