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/sv.svg

@@ -590,4 +590,4 @@
     <path d="m362.8 290.7-1.4 1.1 2.3 2.8-4-1.3-1.6 1.4 4.3 1.1q-1.1 1.7.2 3c1.1 1.5 2.6 1.3 4 .2l1.8-1.6zm1.7 5 1.5 1.8-.2.1c-.6.5-1.2.8-1.8 0q-.9-1 .4-1.8zm-7.1-.4-1.6 1 .3 1.9-2.7 1.6-1.5-1.1-1.6 1 7.7 5.7 1.1-.7-1.7-9.5zm-1 4.5.8 3h-.1l-2.4-2z"/>
     <path fill-rule="evenodd" d="m348.7 300.3 3.8 8-1.6.7-3-6.5-2.4 1-.6-1.3z"/>
   </g>
-</svg>
+</svg>