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/ss.svg

@@ -5,4 +5,4 @@
   <path fill="#da121a" d="M0 168h640v144H0z"/>
   <path fill="#0f47af" d="m0 0 415.7 240L0 480z"/>
   <path fill="#fcdd09" d="M200.7 194.8 61.7 240l139 45.1L114.9 167v146z"/>
-</svg>
+</svg>