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/sz.svg

@@ -31,4 +31,4 @@
     <path fill="#333" stroke="#000" d="M261.4 155.4c-4.8 9.2 8.3-3 28.8 12.4a35 35 0 0 1 9.2 19.3 62 62 0 0 1-12-5.3s9 9.2 9 19.6c-3.2-2-4.8-1.7-6-4.1 0 3.3 3 5.5 3 10.7a42 42 0 0 0-6.3-4.2c3 5.3-5.5 15.5-1.2 18.8a27 27 0 0 1-18.1-11c-1.6 1-1.8 2.7-1.9 4.6.3.1-11.3-8.7-10.2-12a10 10 0 0 0-2.2 5.8 32 32 0 0 1-9.6-13.8c-1.8 2.4-2 2.4-3.9 5-1.4-8.7-1.4-8.4 1.4-15.8l-5.6 4.3a50 50 0 0 1 25.6-34.3z"/>
     <path fill="#b3b3b3" d="M249.6 200.2c.8-6.3 2.4-8.6 3-12.8.8-7-.2-12.4 2.4-12.2 2.4.2 3.2 2.8 2 10-1.3 7.1-2.4 8.8-7.3 15.1zm13.3 11.6c-.5-5.2.5-7.6.1-11-.5-6-2.4-10.2-.2-10.5s3.4 1.6 3.6 7.8c.2 6-.3 7.7-3.5 13.7m20.8 9.6c-2.3-4.7-4.3-6-5.7-9-2.6-5.3-3.2-9.5-5.1-8.8-2 .8-1.9 3 1 8.2 2.8 5 4.1 6.1 9.7 9.6zm7.1-41.5c-5.8-3-8.7-3-12.4-5-6.5-3.4-10.3-7.1-11.6-5-1.4 2 .4 4.1 7.1 7.2s8.8 3.2 16.8 2.8zm2 17.3c-4-3.4-6.6-4-9.3-6.2-4.8-4-7.1-7.7-8.6-6.2-1.6 1.6-.6 3.6 4.4 7.3s6.7 4.1 13.6 5.1z"/>
   </g>
-</svg>
+</svg>