feat: migrate to native lazy loading of images

package.json

@@ -24,10 +24,8 @@
     "glightbox": "^3.0.9",
     "htmx.org": "^1.9.12",
     "jquery": "^3.6.0",
-    "lazysizes": "^5.3.2",
     "leaflet": "^1.7.1",
     "normalize.css": "^8.0.1",
-    "picturefill": "^3.0.3",
     "slick-carousel": "^1.8.1",
     "sticky-js": "^1.3.0",
     "stimulus-use": "^0.52.0",