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/et.svg

@@ -11,4 +11,4 @@
     <circle cx="534.2" cy="353" r="199.7" fill="#006bc6" transform="matrix(.54 0 0 .54 -25.8 74)"/>
     <path fill="#ffc621" d="m214.3 188.2-6.5 4.5 23.5 33 6.3-4zm29.4 78-9.7-6.8 4-12.7-48.1.7-14-10.7 65.7-.7 12.2-36.9 6.6 15zm76.5-70.7-6.3-4.8-24.3 32.4 5.6 4.7zM254.8 247l3.5-11.2h13.3L256.4 190l6-16.5 20.5 62.4 38.8.5-12.2 10.7zm90.6 51.2 2.7-7.4-38.3-13.3-2.8 7zm-69.1-46.4 11.7-.1 4.1 12.6 38.8-28.5 17.6.6-53.1 38.7 11.5 37.2-14-8.4zm-19.8 102 7.9.2.3-40.5-7.4-.5zm22-80.3 3.8 11.1-10.7 8 39.4 27.7 5 16.8-53.6-38-31.5 22.7 3.5-16 44-32.3zm-103.3 13 2.3 7.5 38.7-12.2-2-7.2zm83.2-4-9.4 7.1-10.8-7.7-14.2 46-14.4 10 19.5-62.7-31.4-23 16.3-1.6z"/>
   </g>
-</svg>
+</svg>