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/mt.svg

@@ -55,4 +55,4 @@
     <path stroke-width=".2" d="M157 136c.9 3.2 1 4.4 3.2 5m-4.1-5.1c1 3.1 2 4.8 4.1 5m-5-5.4c1 3.1 2.4 5.3 5 5.4m11.6 24.8q-.6-.4-1-1.3l-.7-1.6-.5.3q-.6 0-.2-.4l.4-.2-.6-1.2q-.3 0 .2-.3t.4 0l.6 1.2.4-.2c.3-.2.5.3.2.4l-.5.2.8 1.6c.4.7.5.9.5 1.5m-.1-3.4-2.4 1.3m-2.2-1.8 3.2-1.6m-3.7 1 3.3-1.6"/>
     <path stroke-width=".1" d="m140.1 153 1.1-1m-1.5.5 1-1m-1.6.5 1.1-1m19.8-4.6h1m-1.1-.8h1m-1 .4h1m1.3-9.2.6.3"/>
   </g>
-</svg>
+</svg>