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/pw.svg

@@ -8,4 +8,4 @@
     <path fill="#4aadd6" d="M-173.4 0h846.3v480h-846.3z"/>
     <path fill="#ffde00" d="M335.6 232.1a135.9 130.1 0 1 1-271.7 0 135.9 130.1 0 1 1 271.7 0"/>
   </g>
-</svg>
+</svg>