chore: remove rsync dependency to simplify ci build

build.sh

 echo "Processing assets"
 
 mkdir -p public/fonts public/img
-rsync -avzh --ignore-missing-args node_modules/bootstrap/fonts/*.{ttf,woff,eot,svg,woff2} node_modules/font-awesome/fonts/*.{ttf,woff,eot,svg,woff2,otf} fonts/*.{ttf,woff,woff2} node_modules/bootcards/dist/fonts/*.{ttf,woff,eot,svg,woff2,otf} public/fonts
-rsync -avzh --ignore-missing-args node_modules/leaflet/dist/images/** img/** public/img
+cp node_modules/bootstrap/fonts/*.{ttf,woff,eot,svg,woff2} node_modules/font-awesome/fonts/*.{ttf,woff,eot,svg,woff2,otf} fonts/*.{ttf,woff,woff2} node_modules/bootcards/dist/fonts/*.{ttf,woff,eot,svg,woff2,otf} public/fonts
+cp node_modules/leaflet/dist/images/** img/** public/img
 
 npx pug pug/pages --out public