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/py.svg

@@ -154,4 +154,4 @@
     <path d="m314.8 263.4-9.3 2.6h10l1.3-1.5-2-1z"/>
   </g>
   <path fill="#fedf00" stroke="#000" stroke-width=".4" d="m327.6 249.5-7.6-5.3-7.6 5.3 2.9-8.4-6.7-5.2h8.6l2.8-8.4 2.8 8.4h8.6l-6.7 5.2z"/>
-</svg>
+</svg>